[Bug 65811] New: AMD 7970M (PowerXpress) power management not functioning properly when using Xrandr to offload rendering

[Bug 65811] New: AMD 7970M (PowerXpress) power management not functioning properly when using Xrandr to offload rendering

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=65811

            Bug ID: 65811
           Summary: AMD 7970M (PowerXpress) power management not
                    functioning properly when using Xrandr to offload
                    rendering
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.13-rc1
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: jack@cyphernaut.org
        Regression: No

rc1 appears to have solved my issues of X not starting or crashing when
starting, which I ran into when using the DRM patches on 3.12. However I've run
into another issue:

When I start my laptop, if I do not immediately offload rendering to the
discrete Radeon card (xrandr --setprovideroffloadsink radeon Intel) the state
in vgaswitcheroo will change to 'DynOff', and xrandr --listproviders will no
longer report the radeon as a potentially offload source

Conversely, if I *do* --setprovideroffloadsink to the radeon within a few
seconds after X starts, the state in vgaswitcheroo changes to DynPwr and never
actually turns off (laptop behaves as if runpm was not enabled at all).

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[Bug 65811] AMD 7970M (PowerXpress) power management not functioning properly when using Xrandr to offload rendering

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=65811

--- Comment #1 from Jack <jack@cyphernaut.org> ---
Only kernel option I have set is `radeon.runpm=1`, not sure if this is needed
in 3.13 or if it even matters that I have it.

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[Bug 65811] AMD 7970M (PowerXpress) power management not functioning properly when using Xrandr to offload rendering

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https://bugzilla.kernel.org/show_bug.cgi?id=65811

--- Comment #2 from Jack <jack@cyphernaut.org> ---
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor
Graphics Controller (rev 09)
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Wimbledon XT [Radeon HD 7970M]

Linux localhost 3.13.0-1-00085-g7e3528c-dirty #1 SMP PREEMPT Sun Nov 24
17:38:54 CST 2013 x86_64 GNU/Linux

xf86-video-ati-git 3103.d571d6a-1
xf86-video-intel-git 7529.b14228f-1

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[Bug 65811] AMD 7970M (PowerXpress) power management not functioning properly when using Xrandr to offload rendering

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=65811

Alex Deucher <alexdeucher@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alexdeucher@gmail.com

--- Comment #3 from Alex Deucher <alexdeucher@gmail.com> ---
Please attach your xorg log and dmesg output.

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[Bug 65811] AMD 7970M (PowerXpress) power management not functioning properly when using Xrandr to offload rendering

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https://bugzilla.kernel.org/show_bug.cgi?id=65811

--- Comment #4 from Alex Deucher <alexdeucher@gmail.com> ---
If you boot with radeon.runpm=0, are you still able to manually enable/disable
the radeon card with vgaswitcheroo?  If not, can you bisect what broke that?

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[Bug 65811] AMD 7970M (PowerXpress) power management not functioning properly when using Xrandr to offload rendering

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https://bugzilla.kernel.org/show_bug.cgi?id=65811

--- Comment #5 from Alex Deucher <alexdeucher@gmail.com> ---
This looks like a duplicate of bug 65761.

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[Bug 65811] AMD 7970M (PowerXpress) power management not functioning properly when using Xrandr to offload rendering

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https://bugzilla.kernel.org/show_bug.cgi?id=65811

--- Comment #6 from Jack <jack@cyphernaut.org> ---
I'll try with runpm=0 in a moment, will also try reverting commit
bbd34fcdd1b201e996235731a7c98fd5197d9e51 as mentioned in 65761 and see if that
does anything shiny.

I noticed that in bug 65671 his system crashes, however using linux-git
(specifically the AUR package) my system runs fine, it just seems to ignore
runpm entirely.

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[Bug 65811] AMD 7970M (PowerXpress) power management not functioning properly when using Xrandr to offload rendering

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https://bugzilla.kernel.org/show_bug.cgi?id=65811

--- Comment #7 from Jack <jack@cyphernaut.org> ---
running the kernel with radeon.runpm=0 allows me to successfully disable the
discrete card with `echo OFF > /sys/kernel/debug/vgaswitcheroo/switch`

[root@localhost linux-git]# cat /sys/kernel/debug/vgaswitcheroo/switch 
0:DIS: :Off:0000:01:00.0
1:IGD:+:Pwr:0000:00:02.0
[root@localhost linux-git]# 

I should have more tests (and some logs) later this evening -- didn't have a
clone of the kernel repo and 5mbps internet at the relatives makes for a
lengthy download ;P

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