tags 614296 - fixed-upstream
forcemerge 614296 675734
forwarded 614296 https://bugs.freedesktop.org/show_bug.cgi?id=36326
quit
Dear Debian folks,
Am Dienstag, den 24.07.2012, 13:24 +0200 schrieb Paul Menzel:
[…]
> Am Dienstag, den 24.07.2012, 12:29 +0200 schrieb Paul Menzel:
> > unarchive 614296
> > reopen 614296
> > found 614296 2:2.19.0-4
> > notforwarded 614296
> > quit
> >
> > Am Sonntag, den 25.09.2011, 14:08 +0200 schrieb Paul Menzel:
> > > reopen 614296
> > > quit
> > >
> > > Am Sonntag, den 25.09.2011, 13:44 +0200 schrieb Julien Cristau:
> > > > On Sun, Feb 20, 2011 at 22:35:27 +0100, Paul Menzel wrote:
> > > >
> > > > > Package: xserver-xorg-video-intel
> > > > > Version: 2:2.14.0-4
> > > > > Severity: important
> > > > > User: debian-eeepc-devel@lists.alioth.debian.org
> > >
> > > > > I am sorry for not being able to give a better description than writing that with the latest upgrades in Sid/unstable to DebPkg:xserver-xorg-video-intel 2.14.0-? and DebPkg:linux-image-2.6.37-1-686 in for example the LXTerminal often the 2 and 4 are not completely drawn, i. e. like a rubber was used horizontally in the middle of the characters.
> > > > >
> > > > > Additionally there are corruptions browsing the Web using Midori.
> > > >
> > > > According to the linked upstream report this was probably a kernel bug
> > > > and got fixed, so closing.
> > >
> > > Unfortunately the problem is not fixed. I am using a current Debian
> > > Sid/unstable installation with Linux 3.0.0-1.
> > >
> > > The upstream report seems to have the same issues but with different
> > > hardware.
> > >
> > > I will try to follow up on this report and open a new upstream report in
> > > the next month.
> >
> > As written last September (2011) I can still reproduce this error.
> > Unfortunately the bug was archived because I did a reply to all and did
> > not remove »done« for <614296-done@bugs.debian.org>. Therefore I am
> > unarchiving this report to reopen it properly.
> >
> > Obviously the upstream report is for a different issue and therefore I
> > am removing that too.
[…]
> > PS: After this, I will merge this with #675734 [1] and hopefully find a
> > solution with the reporters there.
reading up on all the links regarding this report, this is what I found.
First the work around. Using the SNA backend(?) of the Intel DDX
(`xserver-xorg-video-intel`) as suggested by Chris Wilson on #intel-gfx
by creating `/etc/X11/xorg.conf.d/99-local.conf` with the following
content
Section "Device"
Identifier "Device0"
Driver "intel"
Option "AccelMethod" "sna"
EndSection
the rendering corruptions do not occur anymore on my Eee PC 701 4G. Only
once I saw some kind of smearing(?) – letters not rendered sharply but
blurry –
Chris Wilson also suggested to try the options
Option "DebugFlushBatches" "1"
and
Option "DebugFlushWait" "1"
together and separately with the default backend (non SNA). But I did
not try those. Maybe someone else has some time to do so and capture all
relevant log files as by turning on log level debug logged to
`/var/log/Xorg.0.log` and to provide all information listed at their Web
page »How to file a good bug report« [2].
This would be especially desirable to fix the issue with the old backend
because SNA will not be enabled by default I guess and the current way
is difficult to do for normal users.
Also we need to consider that upstream does not maintain older versions
and the one in Debian Wheezy/testing is already superseded by version
2.20.1 [3] which will not be packaged for Debian Sid/unstable until
after the release and will not be allowed for Debian Wheezy due to the
freeze (I think). Therefore testing newer versions is also difficult.
Now some information regarding other resources concerning this issue.
After reproducing this issue with Fedora I created ticket #704959 at the
Red Hat Bugzilla [5] and Sitsofe Wheeler informed me about the reports
at the freedesktop.org Bugzilla #36326 [4] and at Launchpad #745608 [6].
Although the freedesktop.org Bugzilla ticket #36326 is named
[915GM] Characters sometimes have horizontal lines through them (glyph font corruption)
some people also report the same problem with 945GM/GMS (and others do
not :/).
Samual and Axel, maybe you can subscribe to the freedesktop.org Bugzilla
ticket #36326. I believe the upstream developers will be the only ones
being able to fix this issue properly.
But first I hope the SNA fix will work for you too and I did not mess
anything up with this merge.
Thanks,
Paul
> > [1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=675734
[2] http://intellinuxgraphics.org/how_to_report_bug.html
[3] http://lists.freedesktop.org/archives/xorg/2012-July/054916.html
[4] https://bugs.freedesktop.org/show_bug.cgi?id=36326
[5] https://bugzilla.redhat.com/show_bug.cgi?id=704959
[6] https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/745608
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