intel 855: crash after playing xv and vt switch - reg dumps

[Raúl Sánchez Siles]

Willi Mann wrote:

> Hi!
> 
> As follow-up to the second issue described in
> 
> http://lists.freedesktop.org/archives/xorg/2007-October/029604.html
> 
> I have uploaded intel_reg_dumper output to
> 
> http://wserver.wm1.at/~willi/xorg-dumps/
> 
> 01reg_dump_x-before-login.dump
> X server started
> 02reg_dump_x-after-login.dump
> logged in (kdm)
> 03reg_dump_x-after-login2.dump
> should be the same as above
> 04reg_dump_x-while-playing-xv.dump
> now I'm playing video with mplayer -vo xv
> 05reg_dump_x-after-playing-xv.dump
> stopped mplayer
> 06reg_dump_x-after-chvt1.dump
> switched to vt 1, this kills X (SEGFAULT in xserver code as result of
> lockup) and kdm restarts X, so the dump is with X (kdm) on display
> 07reg_dump_x-after-second-chvt1.dump
> switched to vt 1 again, which presents a black screen
> 
> 
> The most notable difference seems to be the difference between before
> playing video with mplayer and after.
> 
> $ diff -u reg_dump_x-after-login2.dump reg_dump_x-after-playing-xv.dump
> --- reg_dump_x-after-login2.dump        2007-11-04 11:29:06.000000000
> +0100
> +++ reg_dump_x-after-playing-xv.dump    2007-11-04 11:30:16.000000000
> +0100 @@ -45,7 +45,7 @@
>  (II):             HBLANK_A: 0x033f027f (640 start, 832 end)
>  (II):              HSYNC_A: 0x02bf0297 (664 start, 704 end)
>  (II):             VTOTAL_A: 0x020701df (480 active, 520 total)
> -(II):             VBLANK_A: 0x020701e8 (489 start, 520 end)
> +(II):             VBLANK_A: 0x020701df (480 start, 520 end)
>  (II):              VSYNC_A: 0x01ea01e8 (489 start, 491 end)
>  (II):            BCLRPAT_A: 0x00000000
>  (II):         VSYNCSHIFT_A: 0x00000000
> 
> I'm running xf86-video-intel master as pulled today. I hope that helps
> to resolve the issue. I can provide more info if required.
> 
> Willi

Just for the sake of completeness this is bug:
https://bugs.freedesktop.org/show_bug.cgi?id=12356 for which there's a
patch available on the BTS. I didn't have the time yet to test, but I hope
to do shortly.

Regards,

-- 
     Raúl Sánchez Siles
----->Proud Debian user<-----
Linux registered user #416098