Bug 23740

Summary:	blanks the screen in graphics mode "forever" at random moments on intel (i915 driver)
Product:	Branch 5.1	Reporter:	Ivan Zakharyaschev <imz>
Component:	kernel-modules-drm-std-def	Assignee:	Michail Yakushin <silicium>
Status:	CLOSED WONTFIX	QA Contact:	QA 5.1 <qa-5.1>
Severity:	normal
Priority:	P3
Version:	unspecified
Hardware:	all
OS:	Linux
Bug Depends on:
Bug Blocks:	23739, 23850

Description

Ivan Zakharyaschev 2010-07-07 20:26:53 MSD

The following problem can also be considered as a problem of the kernel: because even after restarting X, the screen stays blank. So, this means, the kernel doesn't provide a clean state for the new, independent X process. The kernel could take care of providing a clean graphics state for new Xs.

+++ This bug was initially created as a clone of Bug #23739 +++

Created an attachment (id=4453)
/var/log/Xorg.0.log.old when this happens

xorg-drv-intel-2.4.3-alt0.M41.1
# uname -a
Linux localhost.localdomain 2.6.30-std-def-alt15 #1 SMP Mon Dec 14 08:45:48 UTC 2009 i686 GNU/Linux
# lspci | fgrep -i vga
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)
# 

At random moments (often when opening a new page in chromium-browser-6.0.401.0-alt1.r47010), the screen is blanked (more precisely, filled with one color: black, or the blue color of the Chromium's window). One can successfully switch to a linux text console. But this state of the graphics screen stays "forever" until a reboot: restarting X doesn't help.

This happens rather seldom; and is not deterministically reproducible.

Comment 1

Ivan Zakharyaschev 2010-08-05 10:53:19 MSD

(Originally posted to https://bugzilla.altlinux.org/show_bug.cgi?id=23739#c6 , but htis comments concerns 5.1 as well.)

This also happened on 2.6.32-un-def-alt5 (from 5.1) and that
xorg-drv-intel-2.4.3-alt0.M41.1 (when working in rxvt-unicode-9.02-alt1).

Comment 2

Ivan Zakharyaschev 2010-08-05 10:55:54 MSD

Perhaps, it's fixed by this famous (http://www.linux.org.ru/news/kernel/5174456 ) commit:  http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=944001201ca0196bcdb088129e5866a9f379d08cb ...

Comment 3

Ivan Zakharyaschev 2010-08-05 10:59:16 MSD

(In reply to comment #1)

> This also happened on 2.6.32-un-def-alt5 (from 5.1) and that

https://bugzilla.altlinux.org/show_bug.cgi?id=23850

Comment 4

Andrey Rahmatullin 2010-08-05 11:13:11 MSD

https://bugzilla.kernel.org/show_bug.cgi?id=14781

(В ответ на комментарий №2)
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=944001201ca0196bcdb088129e5866a9f379d08cb
> ...

404

Comment 5

Ivan Zakharyaschev 2010-08-09 15:43:49 MSD

(In reply to comment #4)
> https://bugzilla.kernel.org/show_bug.cgi?id=14781
> 
> (В ответ на комментарий №2)
> > http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=944001201ca0196bcdb088129e5866a9f379d08cb
> > ...
> 
> 404

Sorry, my typo was an extra "b" at the end; the correct URL is:

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=944001201ca0196bcdb088129e5866a9f379d08c .

Comment 6

Ivan Zakharyaschev 2010-08-09 15:52:10 MSD

(In reply to comment #5)

> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=944001201ca0196bcdb088129e5866a9f379d08c
> .

Also, <q>Intel's Keith Packard provided a patch documenting some of the register used by Arlie's new code</q>: 

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=45503ded966c98e604c9667c0b458d40666b9ef3 .

Comment 7

Anton Farygin 2026-09-01 21:30:25 MSK

Ветка 5.1 давно EOL, неактуально.