[Bug 68235] New: Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

[Bug 68235] New: Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

          Priority: medium
            Bug ID: 68235
          Assignee: dri-devel@lists.freedesktop.org
           Summary: Display freezes after login with kernel 3.11.0-rc5 on
                    Cayman with dpm=1
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: alexandre.f.demers@gmail.com
          Hardware: Other
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Radeon
           Product: DRI

I was testing kernel 3.11.0-rc5 and ended up with my display freezing after
login (2 tests: one this morning, one tonight). It always freezes when dpm=1,
but it doesn't if disabled.

The result on my screen looks like screenshot posted in bug 66963
(https://bugs.freedesktop.org/attachment.cgi?id=83470)

So I connected through ssh and I got some error in dmesg just after display
froze. I'll be attaching my errors.log file in a moment. You'll see 

VM is also enabled. I could try without it.

Also, it doesn't freezes with commit 69e0b57, I've been using and testing it
regularly for the last week and half. So I could bisect if we don't have enough
info.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #1 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
Created attachment 84186
  --> https://bugs.freedesktop.org/attachment.cgi?id=84186&action=edit
errors when freeze happens

Errors logged from my two last try at booting and logging with kernel
3.11.0-rc5 when dpm=1 with RADEON_va=1

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #2 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
I began bisecting tonight. Rc2 was already having this bug. More news to come
before the weekend.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #3 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
kernel 3.11.0-rc1 was experiencing a bug, but not the one seen in rc2 and
beyond. I'll dig on the "fix" that brought us to the state seen since rc2. If
nothing can be found, I'll go up the drm-next branch that was included in rc1.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #4 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
After bisect in one direction, I've ended up with the following commit:
f90555cbe629e14c6af1dcec1933a3833ecd321f is the first bad commit
commit f90555cbe629e14c6af1dcec1933a3833ecd321f
Author: Alex Deucher <alexander.deucher@amd.com>
Date:   Wed Jul 17 16:34:12 2013 -0400

    drm/radeon/dpm/atom: fix broken gcc harder

    See bugs:
    https://bugs.freedesktop.org/show_bug.cgi?id=66932
    https://bugs.freedesktop.org/show_bug.cgi?id=66972
    https://bugs.freedesktop.org/show_bug.cgi?id=66945

    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

:040000 040000 c32ad9a80c5356236e935eeb5198683727b9d00d
eb5aa1083eb33e7b9aebebdb310dda0399152e87 M    drivers

Now, I must say this commit actually fixes a visual problem after commit
69e0b57 (which is a good commit over here without any known problem). So, I'll
dig in the other direction to find which commit broke the known good state.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #5 from Alex Deucher <agd5f@yahoo.com> ---
You might try this branch in case gcc is having problems with the variable
sized arrays used in the driver:
http://cgit.freedesktop.org/~agd5f/linux/log/?h=drm-next-3.12-wip-gcc-fixes

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #6 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #5)
> You might try this branch in case gcc is having problems with the variable
> sized arrays used in the driver:
> http://cgit.freedesktop.org/~agd5f/linux/log/?h=drm-next-3.12-wip-gcc-fixes

Ok, I'll try it tonight.

About the bisection I'm doing on the other direction (to find what broke the
display), I should also be able to narrow it down tonight.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #7 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
Hi Alex. I'm about to test your suggestion. Meanwhile, I identified the
original commit that broke the driver before being fixed by
f90555cbe629e14c6af1dcec1933a3833ecd321f (but ending by the display hanging,
eventhough I can connect through ssh)

So the first bad commit was:
7ad8d0687bb5030c3328bc7229a3183ce179ab25 is the first bad commit
commit 7ad8d0687bb5030c3328bc7229a3183ce179ab25
Author: Alex Deucher <alexander.deucher@amd.com>
Date:   Mon Jul 1 16:07:18 2013 -0400

    drm/radeon/dpm: re-enable state transitions for Cayman

    Was disabled due to stability issues on certain boards
    caused by the a bug in the parsing of the atom mc reg tables.
    That's fixed now so re-enable.

    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

:040000 040000 de8dfc2a15d5114e81636811d7e3b39c15fc515b
d0e1ee828f10456d39e2ab30cc6598203e50fa6e M    drivers

Heading for your suggestion right away with
http://cgit.freedesktop.org/~agd5f/linux/log/?h=drm-next-3.12-wip-gcc-fixes.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #8 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
Tested with
http://cgit.freedesktop.org/~agd5f/linux/log/?h=drm-next-3.12-wip-gcc-fixes and
it does exactly the same thing: it boots fine, show the login screen. I can
even login in if it doesn't hang right away. Then, it will hang at some point
(either at login screen or after loading the desktop). It displays generally
grey vertical bars.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #9 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
Still the same with kernel 3.11.0. Tried with VM=0, aspm=0, disconnected my UPC
(just in case it was something with a "battery" state or something similar),
tried Gnome 3 and XFCE, all the same. The only thing working for now is to set
dpm=0 or to force ret=1 in ni_dpm_set_power_state when checking what
ni_restrict_performance_levels_before_switch answered.

However, I don't know if the problem is with ni_dpm_set_power_state or with
something executed after, so I'll play in there.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #10 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
If ret=1 just after ni_restrict_performance_levels_before_switch(),
ni_dpm_set_power_state() doesn't go any further and there is no hang. So, it
seems like if the problem is not with
ni_restrict_performance_levels_before_switch() but instead with a combination
of some sort.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #11 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
So, after getting out at different points from ni_dpm_set_power_state(), it
seems I can go down to ni_power_control_set_level() without problem. However,
if I move to the next call which is ret = ni_dpm_force_performance_level(rdev,
RADEON_DPM_FORCED_LEVEL_AUTO), it hangs.

Could it be because we are setting something wrong in auto performance level?
I'll be attaching my vbios just in case.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #12 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
Created attachment 85157
  --> https://bugs.freedesktop.org/attachment.cgi?id=85157&action=edit
Cayman 6950 XFX vbios

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #13 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
Is there anything else I can do to give a better idea of what is happening and
why it crashes?

 If this can be of any value, my 6950 is of the following model: XFX
HD-695X-ZNDC (1GB DDR5, 830MHz Core Clock and 5200MHz Memory Clock)

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #14 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 85578
  --> https://bugs.freedesktop.org/attachment.cgi?id=85578&action=edit
disable various dpm features

I would suggest disabling various dpm features and see if you can narrow down
which, if any, help.  This patch disables just about everything.

ni_dpm_force_performance_level(rdev, RADEON_DPM_FORCED_LEVEL_AUTO) is what
actually sets the dynamic performance switching into motion.  Prior to that the
hw is locked into the low performance level.  I sounds like there is some bad
parameter that is causing a lock up when the smc enables state switching.

Separate from the patch can you also try changing the
ni_dpm_force_performance_level(rdev, RADEON_DPM_FORCED_LEVEL_AUTO) call in
ni_dpm_set_power_state() to low (RADEON_DPM_FORCED_LEVEL_LOW) or high
(RADEON_DPM_FORCED_LEVEL_HIGH) rather than auto?  See if you still get a lock
up.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #15 from Alex Deucher <agd5f@yahoo.com> ---
Another thing worth checking, what is the value of module_index passed to
radeon_atom_init_mc_reg_table() in ni_initialize_mc_reg_table() in ni_dpm.c on
your system?

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #16 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #14)
> Created attachment 85578 [details] [review]
> disable various dpm features
> 
> I would suggest disabling various dpm features and see if you can narrow
> down which, if any, help.  This patch disables just about everything.
> 
> ni_dpm_force_performance_level(rdev, RADEON_DPM_FORCED_LEVEL_AUTO) is what
> actually sets the dynamic performance switching into motion.  Prior to that
> the hw is locked into the low performance level.  I sounds like there is
> some bad parameter that is causing a lock up when the smc enables state
> switching.
> 
> Separate from the patch can you also try changing the
> ni_dpm_force_performance_level(rdev, RADEON_DPM_FORCED_LEVEL_AUTO) call in
> ni_dpm_set_power_state() to low (RADEON_DPM_FORCED_LEVEL_LOW) or high
> (RADEON_DPM_FORCED_LEVEL_HIGH) rather than auto?  See if you still get a
> lock up.

I'll try it later today.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #17 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #15)
> Another thing worth checking, what is the value of module_index passed to
> radeon_atom_init_mc_reg_table() in ni_initialize_mc_reg_table() in ni_dpm.c
> on your system?

How can I get it? Should I print it in dmesg?

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #18 from Alex Deucher <agd5f@yahoo.com> ---
(In reply to comment #17)
> (In reply to comment #15)
> > Another thing worth checking, what is the value of module_index passed to
> > radeon_atom_init_mc_reg_table() in ni_initialize_mc_reg_table() in ni_dpm.c
> > on your system?
> 
> How can I get it? Should I print it in dmesg?

yes, that would be great.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #19 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #16)
> (In reply to comment #14)
> > Created attachment 85578 [details] [review] [review]
> > disable various dpm features
> > 
> > I would suggest disabling various dpm features and see if you can narrow
> > down which, if any, help.  This patch disables just about everything.
> > 
> > ni_dpm_force_performance_level(rdev, RADEON_DPM_FORCED_LEVEL_AUTO) is what
> > actually sets the dynamic performance switching into motion.  Prior to that
> > the hw is locked into the low performance level.  I sounds like there is
> > some bad parameter that is causing a lock up when the smc enables state
> > switching.
> > 
> > Separate from the patch can you also try changing the
> > ni_dpm_force_performance_level(rdev, RADEON_DPM_FORCED_LEVEL_AUTO) call in
> > ni_dpm_set_power_state() to low (RADEON_DPM_FORCED_LEVEL_LOW) or high
> > (RADEON_DPM_FORCED_LEVEL_HIGH) rather than auto?  See if you still get a
> > lock up.
> 
> I'll try it later today.

I had time for now to play with forcing RADEON_DPM_FORCED_LEVEL_LOW and
RADEON_DPM_FORCED_LEVEL_HIGH. The first one works fine, the second triggers the
problem.

I'm about to play with the suggested patch.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #20 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
Ok, if I apply the whole suggested patch but the following, it hangs:
@@ -4152,14 +4152,14 @@ int ni_dpm_init(struct radeon_device *rdev)
     }
     ni_pi->mclk_rtt_mode_threshold = eg_pi->mclk_edc_wr_enable_threshold;

-    pi->voltage_control =
-        radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_VDDC, 0);
+    pi->voltage_control = false;
+//        radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_VDDC, 0);

-    pi->mvdd_control =
-        radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_MVDDC, 0);
+    pi->mvdd_control = false;
+//        radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_MVDDC, 0);

-    eg_pi->vddci_control =
-        radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_VDDCI, 0);
+    eg_pi->vddci_control = false;
+//        radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_VDDCI, 0);

     rv770_get_engine_memory_ss(rdev);

I'll try to play with that a bit and I'll come back. I also still have to give
you the module_index.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #21 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
Adding printk(KERN_DEBUG "DEBUG: about to pass the following value of
module_index to radeon_atom_init_mc_reg_table(): %d", module_index); just
before calling radeon_atom_init_mc_reg_table() returns 2.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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[-- Attachment #1.1: Type: text/plain, Size: 1199 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #22 from Alex Deucher <agd5f@yahoo.com> ---
(In reply to comment #20)
> Ok, if I apply the whole suggested patch but the following, it hangs:
> @@ -4152,14 +4152,14 @@ int ni_dpm_init(struct radeon_device *rdev)
>  	}
>  	ni_pi->mclk_rtt_mode_threshold = eg_pi->mclk_edc_wr_enable_threshold;
>  
> -	pi->voltage_control =
> -		radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_VDDC, 0);
> +	pi->voltage_control = false;
> +//		radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_VDDC, 0);
>  
> -	pi->mvdd_control =
> -		radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_MVDDC, 0);
> +	pi->mvdd_control = false;
> +//		radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_MVDDC, 0);
>  
> -	eg_pi->vddci_control =
> -		radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_VDDCI, 0);
> +	eg_pi->vddci_control = false;
> +//		radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_VDDCI, 0);
>  
>  	rv770_get_engine_memory_ss(rdev);

So does just applying this portion of the patch by itself fix the hang?

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #23 from Alex Deucher <agd5f@yahoo.com> ---
(In reply to comment #21)
> Adding printk(KERN_DEBUG "DEBUG: about to pass the following value of
> module_index to radeon_atom_init_mc_reg_table(): %d", module_index); just
> before calling radeon_atom_init_mc_reg_table() returns 2.

Ok, that looks good.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #24 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #22)
> (In reply to comment #20)
> > Ok, if I apply the whole suggested patch but the following, it hangs:
> > @@ -4152,14 +4152,14 @@ int ni_dpm_init(struct radeon_device *rdev)
> >  	}
> >  	ni_pi->mclk_rtt_mode_threshold = eg_pi->mclk_edc_wr_enable_threshold;
> >  
> > -	pi->voltage_control =
> > -		radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_VDDC, 0);
> > +	pi->voltage_control = false;
> > +//		radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_VDDC, 0);
> >  
> > -	pi->mvdd_control =
> > -		radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_MVDDC, 0);
> > +	pi->mvdd_control = false;
> > +//		radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_MVDDC, 0);
> >  
> > -	eg_pi->vddci_control =
> > -		radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_VDDCI, 0);
> > +	eg_pi->vddci_control = false;
> > +//		radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_VDDCI, 0);
> >  
> >  	rv770_get_engine_memory_ss(rdev);
> 
> So does just applying this portion of the patch by itself fix the hang?

Applying just this returns an error when booting: ni_upload_sw_state failed,
but obviously the system doesn't hang after that (though it can't change its
performance state)

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #25 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #22)
> (In reply to comment #20)
> > Ok, if I apply the whole suggested patch but the following, it hangs:
> > @@ -4152,14 +4152,14 @@ int ni_dpm_init(struct radeon_device *rdev)
> >  	}
> >  	ni_pi->mclk_rtt_mode_threshold = eg_pi->mclk_edc_wr_enable_threshold;
> >  
> > -	pi->voltage_control =
> > -		radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_VDDC, 0);
> > +	pi->voltage_control = false;
> > +//		radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_VDDC, 0);
> >  
> > -	pi->mvdd_control =
> > -		radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_MVDDC, 0);
> > +	pi->mvdd_control = false;
> > +//		radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_MVDDC, 0);
> >  
> > -	eg_pi->vddci_control =
> > -		radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_VDDCI, 0);
> > +	eg_pi->vddci_control = false;
> > +//		radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_VDDCI, 0);
> >  
> >  	rv770_get_engine_memory_ss(rdev);
> 
> So does just applying this portion of the patch by itself fix the hang?

The only way I don't have a "ni_upload_sw_state failed" is by letting
pi->voltage_control = radeon_atom_is_voltage_gpio(rdev,
SET_VOLTAGE_TYPE_ASIC_VDDC, 0); However, I inevitably end up with a hang either
at login or when my session is loading (however, going in a terminal before it
hangs prevents any hang from happening as long as I stay in terminal).

If I patch that part of code, I always have the "ni_upload_sw_state failed"
error, thus not hanging but preventing any dpm.

I can patch everything else or nothing at all (I tried different combinations)
and they don't seem to change a thing about the hang.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #26 from Alex Deucher <agd5f@yahoo.com> ---
Can you attach your dmesg with dpm enabled?

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #27 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #26)
> Can you attach your dmesg with dpm enabled?

Do you mean with the patch applied (total and/or problematic part left alone)?

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #28 from Alex Deucher <agd5f@yahoo.com> ---
(In reply to comment #27)
> (In reply to comment #26)
> > Can you attach your dmesg with dpm enabled?
> 
> Do you mean with the patch applied (total and/or problematic part left
> alone)?

Doesn't matter.  I just want to see the basic driver output and power state
list.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #29 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
Created attachment 85798
  --> https://bugs.freedesktop.org/attachment.cgi?id=85798&action=edit
dpm=1 with partial patch applied on 3.11.0

dmesg output when dpm=1 with partial patch applied (deactivation of pretty much
everything but one to pass ni_upload_sw_state)

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #30 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
If there were any fixes pushed in kernel 3.12-rc1, none changed anything.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #31 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 85989
  --> https://bugs.freedesktop.org/attachment.cgi?id=85989&action=edit
testing patch

Try this patch independent from any other patches.  It forces the engine and
memory clocks of all performance levels within a power state to the lowest
level.  If it works, then try and comment out either the sclk part or the mclk
part and see if either helps.  That should help us narrow down whether it's a
mclk problem or an sclk problem.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #32 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #31)
> Created attachment 85989 [details] [review]
> testing patch
> 
> Try this patch independent from any other patches.  It forces the engine and
> memory clocks of all performance levels within a power state to the lowest
> level.  If it works, then try and comment out either the sclk part or the
> mclk part and see if either helps.  That should help us narrow down whether
> it's a mclk problem or an sclk problem.

Running with the patch works fine over a vanilla kernel 3.12-rc1. The following
works also fine:
//    if (pl->sclk > 25000)
//        pl->sclk = 25000;
    if (pl->mclk > 15000)
        pl->mclk = 15000;
Which means sclk is working properly.

However, the opposite results in a blank screen before I can even get at the
login screen. It seems mclk is the problematic part.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #33 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 86111
  --> https://bugs.freedesktop.org/attachment.cgi?id=86111&action=edit
testing patch - force mclk to high

Try this patch by itself.  This patch will force the mclk to the highest for
all performance levels. If it works, the issue is probably related to the
changing of mclks, if not, then we are probably programming one of the mclk
parameters wrong.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #86111|0                           |1
        is obsolete|                            |

--- Comment #34 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 86112
  --> https://bugs.freedesktop.org/attachment.cgi?id=86112&action=edit
testing patch - force mclk to high

Sorry, had some garbage in my tree.  use this one instead.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #35 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #34)
> Created attachment 86112 [details] [review]
> testing patch - force mclk to high
> 
> Sorry, had some garbage in my tree.  use this one instead.

Tested and the screen ended up blank or frozen somewhere near when Xorg and gdm
are being launched (tried twice). Before that, the console was being displayed
OK.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #36 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
A test of my own:
diff --git a/drivers/gpu/drm/radeon/ni_dpm.c b/drivers/gpu/drm/radeon/ni_dpm.c
index f7b625c..c1875d2 100644
--- a/drivers/gpu/drm/radeon/ni_dpm.c
+++ b/drivers/gpu/drm/radeon/ni_dpm.c
@@ -3952,10 +3952,14 @@ static void ni_parse_pplib_clock_info(struct
radeon_device *rdev,
        pl->mclk = le16_to_cpu(clock_info->evergreen.usMemoryClockLow);
        pl->mclk |= clock_info->evergreen.ucMemoryClockHigh << 16;

+       pl->mclk = 100000;
+
        pl->vddc = le16_to_cpu(clock_info->evergreen.usVDDC);
        pl->vddci = le16_to_cpu(clock_info->evergreen.usVDDCI);
        pl->flags = le32_to_cpu(clock_info->evergreen.ulFlags);

+       pl->vddci = 1150;
+
        /* patch up vddc if necessary */
        if (pl->vddc == 0xff01) {
                if (radeon_atom_get_max_vddc(rdev, 0, 0, &vddc) == 0)

This works. I haven't pushed higher yet.

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--- Comment #37 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
Went to pl->mclk = 115000, runs fine.

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--- Comment #38 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
Running with mclk at 120000.

I went under Windows and launch GPU-Z. We should be able to reach 1300MHz.

I've read that some Cayman cards were made to use a VDDCi between 1.15 and
1.16. I'm pretty sure I can reach stability at 130000 by rising VDDCI a bit.

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--- Comment #39 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
Running with mclk at 125000

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--- Comment #40 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
Should I continu to see what value I can reach?

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #41 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 86147
  --> https://bugs.freedesktop.org/attachment.cgi?id=86147&action=edit
mclk debugging pll debugging output

Can you attach the dmesg output with this patch applied?  I want to make sure
the mclk parameters are being properly calculated for the 130000 mclk.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #42 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #41)
> Created attachment 86147 [details] [review]
> mclk debugging pll debugging output
> 
> Can you attach the dmesg output with this patch applied?  I want to make
> sure the mclk parameters are being properly calculated for the 130000 mclk.

I'll try it at home later today.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #43 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
Created attachment 86168
  --> https://bugs.freedesktop.org/attachment.cgi?id=86168&action=edit
dmesg with 86147

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #44 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 86296
  --> https://bugs.freedesktop.org/attachment.cgi?id=86296&action=edit
patch 1/2

This patch set works around the issue by limiting the sclk and mclk to the
highest levels listed in the clk/voltage dependency tables.  I'll need to dig a
bit more internally to try and figure out how to handle these clks properly.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #45 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 86297
  --> https://bugs.freedesktop.org/attachment.cgi?id=86297&action=edit
patch 2/2

apply these two patches independent of any others.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #46 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
It seems to allow the system to work properly. No crash with patches on 3.11.0
(but another problem with 3.12-rc1, probably a new bug). I added a printk to
show what are the max values. Here is what I get:
[    3.088984] : Hitting max values... max_sclk_vddc->80000,
max_mclk_vddci->125000, max_mclk_vddc->125000

So, as it is, I'm unable to run at top speed (mem) if I understand correctly,
right?

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #47 from Alex Deucher <agd5f@yahoo.com> ---
(In reply to comment #46)
> It seems to allow the system to work properly. No crash with patches on
> 3.11.0 (but another problem with 3.12-rc1, probably a new bug). I added a
> printk to show what are the max values. Here is what I get:
> [    3.088984] : Hitting max values... max_sclk_vddc->80000,
> max_mclk_vddci->125000, max_mclk_vddc->125000
> 
> So, as it is, I'm unable to run at top speed (mem) if I understand
> correctly, right?

Right, it will limit you the the fastest clock in the voltage dependency tables
until I sort out how I'm suuposed to properly handle faster clocks.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

Alexandre Demers <alexandre.f.demers@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #48 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
OK, then with the two last patches on top of kernel 3.11.0, it works fine and
I'm closing this bug. Should I open a new "bug" for the part about the faster
clock and vddci?

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #49 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
Also, the bug I saw when testing patches with kernel 3.12-rc1 just happened
with 3.11.0. The screen turns white and everything is frozen. I can't connect
through ssh (without the patches, when the screen hanged, I was able to connect
through ssh).

I can't find anything in logs that could help identify what is going on. I
wasn't doing anything special and I can start a game under Steam where the
GPU's fan will accelerate (which is a sign the card is now running faster)
without any problem. The computer can just sit there while nothing happens and
freezes (with a white screen).

I'm tempted to open a different bug, what do you think Alex?

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #50 from Alex Deucher <agd5f@yahoo.com> ---
Go ahead and open new bugs for those issues.

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

Alexandre Demers <alexandre.f.demers@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://bugs.freedesktop.or
                   |                            |g/show_bug.cgi?id=69721

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[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

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https://bugs.freedesktop.org/show_bug.cgi?id=68235

Alexandre Demers <alexandre.f.demers@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://bugs.freedesktop.or
                   |                            |g/show_bug.cgi?id=69723

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