I have same problem on 12.04 using different kernel 3.2/3.4/3.6
The issue is for me visible only in Never Winter Night ( linux native version):
- cpu intensive use and heat
- render artifacts
Render Artifacts are experimented only when I wear some special object in the
game.
Cpu intensive use
this is fixed in precise, which has kernel 3.2.
Jose, maybe test precise (12.04) first and if it's still an issue, file
a new bug.
** No longer affects: xserver-xorg-video-intel
** No longer affects: xserver-xorg-video-intel (Ubuntu)
** Changed in: mesa (Ubuntu)
Status: Confirmed = Fix
** Attachment added: broken-fonts.jpg
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/829086/+attachment/2694425/+files/broken-fonts.jpg
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i am sometimes getting this missing or incorrectly colored fonts (see
attachment broken-fonts.jpg) with intel hd 2000. is this the same
problem or should i file it as a new bug?
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** Changed in: mesa
Status: Confirmed = Fix Released
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https://bugs.launchpad.net/bugs/829086
Title:
Artifacts in 3D with Sandy Bridge
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We got an email back from Intel, the issue was fixed in Keith's drm-
intel-next kernel branch and heading upstream.
Apparently it's a clock gating issue on Sandybridge.
As a temporary fix, if you have intel-gpu-tools, you can run:
sudo intel_reg_write 0x9404 0x1800
For me it seems to have
using completely stock oneiric:
sudo intel_reg_write 0x9404 0x1800
fixes almost all the problems (guessing 90%, by eye?) but some
artifacts remain. (sandybridge on a core-i5-2500K)
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Indeed, the issue has been resolved. In Oneiric I had to install intel-
gpu-tools from git (git clone
git://anongit.freedesktop.org/git/xorg/app/intel-gpu-tools) and then
use sudo intel_reg_write 0x9404 0x1800.
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Yes, intel-gpu-tools in both Natty and Oneiric doesn't work from the
repository (you get the error - Couldn't map MMIO region: No such file
or directory). Compiling intel-gpu-tools from source is one option, but
I also found a PPA that works, and you can also just download the .deb
without adding
Switching upstream bug and Ubuntu package to Mesa - according to
upstream it's a Mesa driver bug, not X Windows.
** Also affects: mesa (Ubuntu)
Importance: Undecided
Status: New
** Changed in: mesa (Ubuntu)
Status: New = Confirmed
** Changed in: xserver-xorg-video-intel
(Also, the upstream bug has a porposed fix and a workaround, if anyone
wants to test it)
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https://bugs.launchpad.net/bugs/829086
Title:
Artifacts in 3D with Sandy Bridge
To manage
I experience a similar problem on my i5-2410M. I currently have a
64-bit Oneiric installation, however the bug was also present in Natty.
I have tried the latest xorg-edgers (in Natty) and latest Oibaf drivers
(in Oneiric), without any luck. It seems to be an Ubuntu specific
problem since
Definitly still happening with latest xorg-edgers. This looks like f.d.o
39730 - now linked.
** Bug watch added: freedesktop.org Bugzilla #39730
https://bugs.freedesktop.org/show_bug.cgi?id=39730
** Also affects: xserver-xorg-video-intel via
I have exactly the same issue on my core i5-2520M with hd 3000 sandy
bridge graphics.
These artifacts are very annoying and only occur at the edges of
transparent textures, like you will see on the screenchot.
Same thing occurs in Osmos, but only edges of all textures are visible.
Next thing:
I am going to try it on Thursday, which is when I am back at work and
have access to the hardware, at home I don't have any sandy bridge based
systems to play with plus I am quite busy with my third year project at
the moment.
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: New = Confirmed
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This has been a problem with 3D apps on earlier version of Oneiric on my
MBP 8,1 (amd64, EFI boot, integrated Sandybridge HD Graphics 3000), but
I have not seen it happen for a while.
Can you reproduce it with an up-to-date Oneiric install?
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** Tags added: 3d
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https://bugs.launchpad.net/bugs/829086
Title:
Artifacts in 3D with Sandy Bridge
To manage notifications about this bug go to:
** Attachment added: Screenshot of tuxracer showing artifacts marked in red
https://bugs.launchpad.net/bugs/829086/+attachment/2290401/+files/tuxracer1.png
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** Attachment added: Another screenshot of tuxracer showing artifacts in red
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/829086/+attachment/2290402/+files/tuxracer2.png
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** Attachment added: Screenshot of our software showing serious artifacts
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/829086/+attachment/2290403/+files/milkhub.png
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I have also tried two different motherboards, with the same H67 chipset,
one Asus, and one Gigabyte.
I have also tried different RAM, so it is not RAM related.
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