Mismatch in gmch_pfit.lvds_border_bits on EeePC 900

Mismatch in gmch_pfit.lvds_border_bits on EeePC 900

[Sitsofe Wheeler]

With a tree that is close to 3.15 final I'm regularly seeing the
following on my EeePC 900 when starting ioquake3:

[drm:intel_pipe_config_compare] *ERROR* mismatch in gmch_pfit.lvds_border_bits (expected 32768, found 0)
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1594 at drivers/gpu/drm/i915/intel_display.c:9834 check_crtc_state+0x998/0x9ef()
pipe state doesn't match!
CPU: 0 PID: 1594 Comm: Xorg Not tainted 3.15.0-rc8-00106-ge585b54 #49
Hardware name: ASUSTeK Computer INC. 900/900, BIOS 1006    03/03/2009
 b0485438 b011f61f b057c98a ebb03b04 0000063a b057b5f4 0000266a b02c31ef
 b02c31ef ee42c000 ee488c00 00000000 ee488d74 b011f684 00000009 ebb03aec
 b057c98a ebb03b04 b02c31ef b057b5f4 0000266a b057c98a 00000000 ebb03bdc
Call Trace:
 [<b0485438>] ? dump_stack+0xa/0x13
 [<b011f61f>] ? warn_slowpath_common+0x70/0x85
 [<b02c31ef>] ? check_crtc_state+0x998/0x9ef
 [<b02c31ef>] ? check_crtc_state+0x998/0x9ef
 [<b011f684>] ? warn_slowpath_fmt+0x33/0x37
 [<b02c31ef>] ? check_crtc_state+0x998/0x9ef
 [<b02cdbe6>] ? intel_modeset_check_state+0x353/0x5fb
 [<b02cdefd>] ? intel_set_mode+0x2a/0x32
 [<b02cebfd>] ? intel_crtc_set_config+0x8c9/0x962
 [<b02151e4>] ? idr_alloc+0xb5/0xc3
 [<b0292d68>] ? drm_mode_set_config_internal+0x39/0x9b
 [<b0293325>] ? drm_mode_setcrtc+0x397/0x438
 [<b0292f8e>] ? drm_crtc_check_viewport+0xef/0xef
 [<b028a871>] ? drm_ioctl+0x327/0x38f
 [<b0292f8e>] ? drm_crtc_check_viewport+0xef/0xef
 [<b016f5f5>] ? do_sync_read+0x5a/0x7f
 [<b028a54a>] ? drm_version+0x73/0x73
 [<b017a883>] ? do_vfs_ioctl+0x350/0x419
 [<b0125e02>] ? recalc_sigpending+0xe/0x36
 [<b0126867>] ? __set_task_blocked+0x61/0x67
 [<b0127ad6>] ? __set_current_blocked+0xd/0xf
 [<b0127bf9>] ? sigprocmask+0x77/0x87
 [<b017a97d>] ? SyS_ioctl+0x31/0x54
 [<b04898c9>] ? sysenter_do_call+0x12/0x26
 [<b0480000>] ? klist_release+0x14/0x87
---[ end trace 900fd39ab2e2b03f ]---

-- 
Sitsofe | http://sucs.org/~sits/

Re: Mismatch in gmch_pfit.lvds_border_bits on EeePC 900

[Daniel Vetter]

On Sun, Jun 08, 2014 at 10:30:15PM +0100, Sitsofe Wheeler wrote:
> With a tree that is close to 3.15 final I'm regularly seeing the
> following on my EeePC 900 when starting ioquake3:
> 
> [drm:intel_pipe_config_compare] *ERROR* mismatch in gmch_pfit.lvds_border_bits (expected 32768, found 0)

Hm, I've thought we've fixed that by now. Alas, no :(

Can you please add drm.debug=0xe to your kernel cmdline, reproduce the
issue and attach the entire dmesg? Please make sure it contains everything
since boot-up so that we can reconstruct the state properly (might need to
grab it from logfiles if dmesg is cut off).

Also, do you have any ideas when you reproduce this? Anything that changes
the lvds output could be relevant ...
-Daniel

> ------------[ cut here ]------------
> WARNING: CPU: 0 PID: 1594 at drivers/gpu/drm/i915/intel_display.c:9834 check_crtc_state+0x998/0x9ef()
> pipe state doesn't match!
> CPU: 0 PID: 1594 Comm: Xorg Not tainted 3.15.0-rc8-00106-ge585b54 #49
> Hardware name: ASUSTeK Computer INC. 900/900, BIOS 1006    03/03/2009
>  b0485438 b011f61f b057c98a ebb03b04 0000063a b057b5f4 0000266a b02c31ef
>  b02c31ef ee42c000 ee488c00 00000000 ee488d74 b011f684 00000009 ebb03aec
>  b057c98a ebb03b04 b02c31ef b057b5f4 0000266a b057c98a 00000000 ebb03bdc
> Call Trace:
>  [<b0485438>] ? dump_stack+0xa/0x13
>  [<b011f61f>] ? warn_slowpath_common+0x70/0x85
>  [<b02c31ef>] ? check_crtc_state+0x998/0x9ef
>  [<b02c31ef>] ? check_crtc_state+0x998/0x9ef
>  [<b011f684>] ? warn_slowpath_fmt+0x33/0x37
>  [<b02c31ef>] ? check_crtc_state+0x998/0x9ef
>  [<b02cdbe6>] ? intel_modeset_check_state+0x353/0x5fb
>  [<b02cdefd>] ? intel_set_mode+0x2a/0x32
>  [<b02cebfd>] ? intel_crtc_set_config+0x8c9/0x962
>  [<b02151e4>] ? idr_alloc+0xb5/0xc3
>  [<b0292d68>] ? drm_mode_set_config_internal+0x39/0x9b
>  [<b0293325>] ? drm_mode_setcrtc+0x397/0x438
>  [<b0292f8e>] ? drm_crtc_check_viewport+0xef/0xef
>  [<b028a871>] ? drm_ioctl+0x327/0x38f
>  [<b0292f8e>] ? drm_crtc_check_viewport+0xef/0xef
>  [<b016f5f5>] ? do_sync_read+0x5a/0x7f
>  [<b028a54a>] ? drm_version+0x73/0x73
>  [<b017a883>] ? do_vfs_ioctl+0x350/0x419
>  [<b0125e02>] ? recalc_sigpending+0xe/0x36
>  [<b0126867>] ? __set_task_blocked+0x61/0x67
>  [<b0127ad6>] ? __set_current_blocked+0xd/0xf
>  [<b0127bf9>] ? sigprocmask+0x77/0x87
>  [<b017a97d>] ? SyS_ioctl+0x31/0x54
>  [<b04898c9>] ? sysenter_do_call+0x12/0x26
>  [<b0480000>] ? klist_release+0x14/0x87
> ---[ end trace 900fd39ab2e2b03f ]---
> 
> -- 
> Sitsofe | http://sucs.org/~sits/

-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch

Re: Mismatch in gmch_pfit.lvds_border_bits on EeePC 900

[Sitsofe Wheeler]

[-- Attachment #1: Type: text/plain, Size: 987 bytes --]

On Tue, Jun 10, 2014 at 08:26:55AM +0200, Daniel Vetter wrote:
> On Sun, Jun 08, 2014 at 10:30:15PM +0100, Sitsofe Wheeler wrote:
> > With a tree that is close to 3.15 final I'm regularly seeing the
> > following on my EeePC 900 when starting ioquake3:
> > 
> > [drm:intel_pipe_config_compare] *ERROR* mismatch in gmch_pfit.lvds_border_bits (expected 32768, found 0)
> 
> Hm, I've thought we've fixed that by now. Alas, no :(
> 
> Can you please add drm.debug=0xe to your kernel cmdline, reproduce the
> issue and attach the entire dmesg? Please make sure it contains everything
> since boot-up so that we can reconstruct the state properly (might need to
> grab it from logfiles if dmesg is cut off).

Please find kern.log.gz attached.

> Also, do you have any ideas when you reproduce this? Anything that changes
> the lvds output could be relevant ...

Doing
xrandr -s 800x600
xrandr -s 0

was enough to provoke the messages in the attached log.

-- 
Sitsofe | http://sucs.org/~sits/

[-- Attachment #2: kern.log.gz --]
[-- Type: application/octet-stream, Size: 31115 bytes --]

Re: Mismatch in gmch_pfit.lvds_border_bits on EeePC 900

[Sitsofe Wheeler]

(resending because Daniel was dropped from the reply list - I don't know
why)

On Wed, Jun 11, 2014 at 06:46:40AM +0100, Sitsofe Wheeler wrote:
> On Tue, Jun 10, 2014 at 08:26:55AM +0200, Daniel Vetter wrote:
> > On Sun, Jun 08, 2014 at 10:30:15PM +0100, Sitsofe Wheeler wrote:
> > > With a tree that is close to 3.15 final I'm regularly seeing the
> > > following on my EeePC 900 when starting ioquake3:
> > > 
> > > [drm:intel_pipe_config_compare] *ERROR* mismatch in gmch_pfit.lvds_border_bits (expected 32768, found 0)
> > 
> > Hm, I've thought we've fixed that by now. Alas, no :(
> > 
> > Can you please add drm.debug=0xe to your kernel cmdline, reproduce the
> > issue and attach the entire dmesg? Please make sure it contains everything
> > since boot-up so that we can reconstruct the state properly (might need to
> > grab it from logfiles if dmesg is cut off).
> 
> Please find kern.log.gz attached.
> 
> > Also, do you have any ideas when you reproduce this? Anything that changes
> > the lvds output could be relevant ...
> 
> Doing
> xrandr -s 800x600
> xrandr -s 0
> 
> was enough to provoke the messages in the attached log.
> 
> -- 
> Sitsofe | http://sucs.org/~sits/



-- 
Sitsofe | http://sucs.org/~sits/

Re: Mismatch in gmch_pfit.lvds_border_bits on EeePC 900

[Daniel Vetter]

On Wed, Jun 11, 2014 at 07:03:39AM +0100, Sitsofe Wheeler wrote:
> (resending because Daniel was dropped from the reply list - I don't know
> why)
> 
> On Wed, Jun 11, 2014 at 06:46:40AM +0100, Sitsofe Wheeler wrote:
> > On Tue, Jun 10, 2014 at 08:26:55AM +0200, Daniel Vetter wrote:
> > > On Sun, Jun 08, 2014 at 10:30:15PM +0100, Sitsofe Wheeler wrote:
> > > > With a tree that is close to 3.15 final I'm regularly seeing the
> > > > following on my EeePC 900 when starting ioquake3:
> > > > 
> > > > [drm:intel_pipe_config_compare] *ERROR* mismatch in gmch_pfit.lvds_border_bits (expected 32768, found 0)
> > > 
> > > Hm, I've thought we've fixed that by now. Alas, no :(
> > > 
> > > Can you please add drm.debug=0xe to your kernel cmdline, reproduce the
> > > issue and attach the entire dmesg? Please make sure it contains everything
> > > since boot-up so that we can reconstruct the state properly (might need to
> > > grab it from logfiles if dmesg is cut off).
> > 
> > Please find kern.log.gz attached.

Not in the resend and I didn't seem to receive your original mail somehow
at all. Can you please resend.

> > > Also, do you have any ideas when you reproduce this? Anything that changes
> > > the lvds output could be relevant ...
> > 
> > Doing
> > xrandr -s 800x600
> > xrandr -s 0
> > 
> > was enough to provoke the messages in the attached log.

Ok, makes sense. Smells a bit like leftover pfit state. Can you please
also try latest drm-intel-nightly?

Thanks, Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch

Re: Mismatch in gmch_pfit.lvds_border_bits on EeePC 900

[Sitsofe Wheeler]

On Wed, Jun 11, 2014 at 11:32:29AM +0200, Daniel Vetter wrote:
> On Wed, Jun 11, 2014 at 07:03:39AM +0100, Sitsofe Wheeler wrote:
> > 
> > On Wed, Jun 11, 2014 at 06:46:40AM +0100, Sitsofe Wheeler wrote:
> > > On Tue, Jun 10, 2014 at 08:26:55AM +0200, Daniel Vetter wrote:
> > > > On Sun, Jun 08, 2014 at 10:30:15PM +0100, Sitsofe Wheeler wrote:
> > > > > With a tree that is close to 3.15 final I'm regularly seeing the
> > > > > following on my EeePC 900 when starting ioquake3:
> > > > > 
> > > > > [drm:intel_pipe_config_compare] *ERROR* mismatch in gmch_pfit.lvds_border_bits (expected 32768, found 0)
> > > > 
> > > > Hm, I've thought we've fixed that by now. Alas, no :(
> > > > 
> > > > Can you please add drm.debug=0xe to your kernel cmdline, reproduce the
> > > > issue and attach the entire dmesg? Please make sure it contains everything
> > > > since boot-up so that we can reconstruct the state properly (might need to
> > > > grab it from logfiles if dmesg is cut off).
> > > 
> > > Please find kern.log.gz attached.
> 
> Not in the resend and I didn't seem to receive your original mail somehow
> at all. Can you please resend.

Downloadable from http://sucs.org/~sits/test/eeepc-900/dmesg-20140611 .

By the way, Mutt seems to be becoming upset when I group reply to your
mails. I think it's because your address is in both the To: and the Cc:
fields....

> > > > Also, do you have any ideas when you reproduce this? Anything that changes
> > > > the lvds output could be relevant ...
> > > 
> > > Doing
> > > xrandr -s 800x600
> > > xrandr -s 0
> > > 
> > > was enough to provoke the messages in the attached log.
> 
> Ok, makes sense. Smells a bit like leftover pfit state. Can you please
> also try latest drm-intel-nightly?

The previous log is from drm-intel-nightly but there seem to be more
warnings in it rather than less...

-- 
Sitsofe | http://sucs.org/~sits/