Bug 568132

Summary:	x11-drivers/ati-drivers, x11-base/xorg-server-1.17 crash when guvcview accesses webcam
Product:	Gentoo Linux	Reporter:	Andrei Voropaev <voropaev.andrey>
Component:	[OLD] Server	Assignee:	Gentoo X packagers <x11>
Status:	RESOLVED WONTFIX
Severity:	normal
Priority:	Normal
Version:	10.1
Hardware:	AMD64
OS:	Linux
URL:	https://forums.gentoo.org/viewtopic-t-1035036.html
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	emerge --info, eix -C x11-drivers -I, lspci

Description Andrei Voropaev 2015-12-13 10:27:52 UTC

Created attachment 419080 [details]
emerge --info, eix -C x11-drivers -I, lspci

When I start guvcview, then on the first run I get only black screen instead of video from camera. On the second run the X server crashes and leaves in /var/log/Xorg.log following message

[  5267.793] (EE) 
[  5267.793] (EE) Backtrace:
[  5267.824] (EE) 0: /usr/bin/X (xorg_backtrace+0x48) [0x580088]
[  5267.824] (EE) 1: /usr/bin/X (0x400000+0x1841a9) [0x5841a9]
[  5267.824] (EE) 2: /lib64/libc.so.6 (0x7f04dcb20000+0x33240) [0x7f04dcb53240]
[  5267.824] (EE) 3: /usr/bin/X (0x400000+0x8b691) [0x48b691]
[  5267.824] (EE) 4: /usr/bin/X (0x400000+0x8c54b) [0x48c54b]
[  5267.824] (EE) 5: /usr/bin/X (0x400000+0xd26d0) [0x4d26d0]
[  5267.824] (EE) 6: /usr/bin/X (0x400000+0x36e6e) [0x436e6e]
[  5267.824] (EE) 7: /usr/bin/X (0x400000+0x3ac5b) [0x43ac5b]
[  5267.824] (EE) 8: /lib64/libc.so.6 (__libc_start_main+0xf5) [0x7f04dcb40865]
[  5267.824] (EE) 9: /usr/bin/X (_start+0x29) [0x426359]
[  5267.824] (EE) 
[  5267.824] (EE) Segmentation fault at address 0x20
[  5267.824] (EE) 
Fatal server error:
[  5267.824] (EE) Caught signal 11 (Segmentation fault). Server aborting
[  5267.824] (EE) 
[  5267.824] (EE) 
Please consult the The X.Org Foundation support 
         at http://wiki.x.org
 for help. 
[  5267.824] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[  5267.824] (EE) 

The same error happens in Skype. Interestingly, the Cheese application works with the same camera without any problem.

The problem appeared after update of xorg-server to version 1.17.4.

Comment 1 Chí-Thanh Christopher Nguyễn gentoo-dev

2015-12-25 19:03:09 UTC

I suspect there is a driver bug when using Xv or similar.

Try reproducing the problem with media-video/mpv and different video outputs.

Comment 2 Andrei Voropaev 2015-12-26 10:39:08 UTC

Actually, I've already hit the same problem with OpenShot (it crashes xorg on the start) and with mplayer when tried to play .mts video.

Comment 3 Matt Turner gentoo-dev

2017-02-23 22:58:12 UTC

ati-drivers is dead, and will not be supported for X.