This really works!!!
Thanks very much.
I've been struggling for a couple months trying to get my FPS to go back
to >1000 from the mere 250.
Does anybody have the same kernel image for the LPIA architecture? I'd
like to see the same fix on my little Dell but I'm running the LPIA
system to get a b
I can also confirm that using the kernel v2.6.30-rc2 fixes this bug, I
would be happy to see the fix in the official jaunty kernel soon.
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** Description changed:
See upstream bug for technical details.
+
+ [lspci]
+ 00:00.0 Host bridge [0600]: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML
and 945GT Express Memory Controller Hub [8086:27a0] (rev 03)
+ Subsystem: Dell Device [1028:01d8]
+ 00:02.0 VGA compatible controlle
I was affected by this bug with my fully updated jaunty i915 machine:
compiz was unusable, problems with videos and so on.
Now i installed kernel-image from http://kernel.ubuntu.com/~kernel-
ppa/mainline/v2.6.30-rc2/ and everything is perfect.
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[945 tiling] Low performance due to no A17 workar
Obvious performance boost with 30rc2. Card is :
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS,
943/940GML Express Integrated Graphics Controller (rev 03)
Subsystem: Toshiba America Info Systems Device 0001
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- V
Small comment on my previous post: apparently enabling UXA with tiling
causes a lot of the known UXA-related bugs to resurface. Rendering is
faster with UXA, but sometimes it seems that the driver decides to stop
rendering - I would resize something and suddenly everything will stop
and the screen
** Changed in: linux (Ubuntu Jaunty)
Assignee: (unassigned) => Bryce (bryce)
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Have installed mesa updates now.
I am on
mesa 7.4-0ubuntu2
drm 2.4.9~git20090416.07646002-0ubuntu0tormod
xserver-xorg-video-intel 2:2.6.99.1+git20090416.b9716b83-0ubuntu0tormod
and under .30RC2 with UXA, X freezes even before I have got a greeter.
"bad" Register dump attached - can't think of a
I can confirm, with linux-image-2.6.30rc2 and xserver-xorg-video-
intel-2:2.6.3-0ubuntu9, I get a definite performance boost when using
kwin. With other kernels there was stuttering under any compositing, but
now performance seems to be back or even better than it was in intrepid
(using UXA).
I do
With 2.6.30 rc2 and xserver-xorg-video-intel
2:2.6.99.1+git20090416.b9716b83-0ubuntu0tormod from xorg-edgers ppa I
get 1400 fps in glxgears in exa mode with Kwin compositing disabled, and
~700 with compositing enabled. This also helps me work around the
annoying suspend-to-ram crashes I get with UX
@ Zack Evans, I think there is a lot of intelcards affected, among
others 945 and 915
Apparently Intel's 2.7 graphics driver still has problem
http://www.phoronix.com/scan.php?page=news_item&px=NzIxMQ
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@ Zack Evans, I think there is a lot of intelcards affected, among
others 935 and 915
Apparently Intel's 2.7 graphics driver still has problem
http://www.phoronix.com/scan.php?page=news_item&px=NzIxMQ
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https://bugs.launchpad.net/bugs/34999
Subject says 945 tiling hence my posting... but everyone else here
talking about 915?
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With this kernel a UXA config freezes almost immediately, even before
greeter appears. How's that for feedback. :-)
However, I see there are some updates in Jaunty to mesa packages which I
haven't installed yet... but no changelog available so I can't tell
what's in there.
** Attachment added: "
I have now tried the 2.6.30-rc2 and noticed no difference. Glxgears
gives ~115 frames where I with intrepid got >1000.
lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Mobile 915GM/GMS/910GML
Express Graphics Controller (rev 04)
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** Changed in: linux (Ubuntu Jaunty)
Milestone: None => jaunty-updates
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** Changed in: xserver-xorg-video-intel
Status: In Progress => Fix Released
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As Bryce mentioned, it would be great to get feedback regarding testing
of http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.30-rc2 . I
imagine if the feedback is positive this would be considered for a SRU -
http://wiki.ubuntu.com/StableReleaseUpdates .
** Changed in: linux (Ubuntu Jaunty)
I
So... Does this fix make jaunty today or jaunty-updates a few weeks from
now?
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Here's the kernel fix. I've been told this is included in 2.6.30-rc2:
commit 280b713b5b0fd84cf2469098aee88acbb5de859c
Author: Eric Anholt
Date: Thu Mar 12 16:56:27 2009 -0700
drm/i915: Allow tiling of objects with bit 17 swizzling by the CPU.
queued to linus
The kernel team has prepar
This bug is fixed upstream according to
https://bugs.freedesktop.org/show_bug.cgi?id=16835 , when will this high
importance fix enter Jaunty?
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Bryce, I feel you would be in the best position to submit it to the
kernel team mailing list. I have no programming background nor can I
claim any expertise with regard to the Intel drivers or modules.
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Well, the GEM disablement option patch has to be taken by the kernel
team. It looks safe enough to me.
The A17 patch currently in the upstream bug tracker looks pretty non-
trivial, and I'm worried it could carry regressions. I'd be more
comfortable to see it in the main tree and tested against
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: Incomplete => Confirmed
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Maybe Eric Anholt will surprise us with an A17 patch, but if he doesn't,
the disable GEM patch is the stop-gap answer.
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[I set the Jaunty task, but it is undetermined yet if we actually want
to disable GEM like this.]
** Changed in: xserver-xorg-video-intel (Ubuntu Jaunty)
Status: Incomplete => Won't Fix
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You rec
Starks, your description says to see the upstream bug for details,
however there is no reference to "A17" I can see there. Please explain
further.
Also, the patch upstream appears to be a kernel patch to disable GEM.
Is your filing of this bug report a request to disable GEM in the
kernel? I see
(The upstream patch I assume is being proposed to add to jaunty?)
** Attachment added: "i915-gem-disable.patch"
http://launchpadlibrarian.net/24790669/i915-gem-disable.patch
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** Also affects: xserver-xorg-video-intel (Ubuntu Jaunty)
Importance: Undecided
Status: Confirmed
** Changed in: xserver-xorg-video-intel (Ubuntu Jaunty)
Importance: Undecided => High
** Changed in: xserver-xorg-video-intel (Ubuntu Jaunty)
Status: Confirmed => Triaged
** Chan
** Tags added: 945gm
** Tags removed: needs-lspci-vvnn needs-xorglog
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: Incomplete => Confirmed
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** Attachment added: "Xorg.0.log"
http://launchpadlibrarian.net/24552132/Xorg.0.log
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lspci and Xorg.0.log attached.
** Attachment added: "lspci.txt"
http://launchpadlibrarian.net/24552128/lspci.txt
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Hi llstarks,
Please attach the output of `lspci -vvnn`, and attach your /var/log/Xorg.0.log
(and maybe Xorg.0.log.old) file from after reproducing this issue. If you've
made any customizations to your /etc/X11/xorg.conf please attach that as well.
[This is an automated message. Apologies if
** Changed in: xserver-xorg-video-intel
Status: Unknown => In Progress
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