2010-11-02 14:58:22

by Paul Rolland

Subject: [2.6.37-rc1] drm:i195 errors

Hello,

I was previously running 2.6.36, without noticing any messages related to
i915/DRM, but now I can see some :

Nov 2 14:21:53 tux kernel: [drm:i915_gem_mmap_gtt_ioctl] *ERROR* Attempting to mmap a purgeable buffer

and also :

Nov 2 15:45:35 tux kernel: [drm:intel_panel_get_max_backlight] *ERROR* fixme: max PWM is zero.

They seem to appear randomly, without any (yet) identified link to some
activity I can have on the machine.

The lspci output is :
[root@tux ~]# lspci -s 00:02.0 -vvv
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07) (prog-if 00 [VGA controller])
Subsystem: Dell Device 02bc
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 40
Region 0: Memory at f6800000 (64-bit, non-prefetchable) [size=4M]
Region 2: Memory at d0000000 (64-bit, prefetchable) [size=256M]
Region 4: I/O ports at 1800 [size=8]
Expansion ROM at <unassigned> [disabled]
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
Address: fee0100c Data: 4159
Capabilities: [d0] Power Management version 3
Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Kernel driver in use: i915

Regards,
Paul

2010-11-09 20:27:12

by Maciej Rutecki

Subject: Re: [2.6.37-rc1] drm:i195 errors

On wtorek, 2 listopada 2010 o 15:58:13 Paul Rolland wrote:
> Hello,
>
> I was previously running 2.6.36, without noticing any messages related to
> i915/DRM, but now I can see some :
>
> Nov 2 14:21:53 tux kernel: [drm:i915_gem_mmap_gtt_ioctl] *ERROR*
> Attempting to mmap a purgeable buffer
>
> and also :
>
> Nov 2 15:45:35 tux kernel: [drm:intel_panel_get_max_backlight] *ERROR*
> fixme: max PWM is zero.
>

I created a Bugzilla entry at
https://bugzilla.kernel.org/show_bug.cgi?id=22542
for your bug report, please add your address to the CC list in there, thanks!


--
Maciej Rutecki
http://www.maciek.unixy.pl

2010-11-10 14:05:14

by njin

Subject: Re: [2.6.37-rc1] drm:i195 errors

Here too
[drm:i915_gem_mmap_gtt_ioctl] *ERROR* Attempting to mmap a purgeable buffer
Nov 8 09:58:36 Lucid kernel: [ 6158.329291] [drm:drm_mode_getfb] *ERROR*
invalid framebuffer id