** Changed in: linux (Ubuntu)
Status: Fix Committed => Fix Released
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Title:
[ubuntu 14.04.2] Artefacts in radeon driver on kernel 3.16
I wonder if this is the same bug which I am seeing on my Dell Inspiron
6400 laptop with Radeon X1400 video. Occasionally I get white lines
which are very similar to the
https://www.youtube.com/watch?v=nx2-Fvihzxg video posted at the
beginning. The only difference is that more lines are present at
@Ivan: There is a slight possibility that the patch could work for you
(I don't know because I don't have that hardware). You could test by
installing kernel 4.7 from mainline.
The probable cause of the flickering is PLL-resonance which only seems
to affect LVDS and only on older GPU-chips. It is
I'm afraid my case is different (drm:radeon_compute_pll_legacy).
Perhaps, it's a matter of forcing a better modeline for the LCD, like
here -- https://forums.gentoo.org/viewtopic-t-984216-start-0.html .
Although mostly I observed the flickering as horizontal lines/line
segments, sometimes the
4.4.19-std-def-alt0.M80P.1 (not Ubuntu, but still might be important for
collecting the data) with bad flickering
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV360
[Radeon 9600/X1050 Series]
01:00.1 Display controller: Advanced Micro Devices, Inc. [AMD/ATI] RV350
Update:
Patch is part of the ubuntu mainline kernel 4.7
I'm running this kernel on ubuntu 16.04 and everything works as perfectly as
expected.
If anyone of you wants to try:
Read this:
https://wiki.ubuntu.com/Kernel/MainlineBuilds
here is kernel 4.7:
Same problem on RV710/M92.
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Title:
[ubuntu 14.04.2] Artefacts in radeon driver on kernel 3.16 and upwards
To manage notifications about this
Best way would be to get the patch in to the stable series so it's fixed
across all distributions:
https://www.kernel.org/doc/Documentation/stable_kernel_rules.txt
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Before I forget:
What can I do to get the patch incorporated in the current LTS release ?
(Xenial 16.04)
According to Christian König the patch is backwards compatible with the 4.x
series kernels.
I've tested it (compiled against 4.4.0.26) and it works without problem.
Who do I have to
@Tim,
Sorry to hear about that, so close to the finish.
Thank you anyway for all the help.
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Title:
[ubuntu 14.04.2] Artefacts in radeon
UPDATE:
Patch submitted by Christian König
Patch applied by Alex Deucher
https://lists.freedesktop.org/archives/dri-devel/2016-June/110724.html
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Hello, Thom.
Sadly the old laptop has died 100% (total failure of GPU).
So i can not be of help on this bug for testing any more.
Thank you all for the work, keep going!
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Radeon HD 3200 & Xubuntu 16.04 (4.4.0.21-generic) ISO booted from the
USB drive:
xubuntu kernel: [ 11.195154] [drm:radeon_compute_pll_avivo] 69300 -
69290, pll dividers - fb: 135.5 ref: 2, post 14
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@Marius, Yes, thanks, that is exactly what I needed.
That one line plus your card model. Excellent.
I need it from as much people (i.e. affected hardware) as possible .
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I'm also hit by the bug on Ubuntu 16.04 with kernel 4.4.0-22-generic and
a Radeon Mobility HD4670.
@thom : the grep command return only the following line :
kernel: [3.760078] [drm:radeon_compute_pll_avivo] 107000 - 106980,
pll dividers - fb: 63.4 ref: 2, post 8
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Tim, Mrerexx and anyone who is hit by this bug:
I am testing a lot at the moment and I need your help.
please boot that problematic kernel with bootoption: drm.debug=4
Then, in a terminal type this:
grep -i "\[drm:" /var/log/kern.log | grep div | tail
post the results here, I'm going to need
OK, about the bisect:
c2fb3094669a3205f16a32f4119d0afe40b1a1fd is the first bad commit
Date: Sun Apr 20 13:24:32 2014 +0200
drm/radeon: improve PLL limit handling in post div calculation
This improves the PLL parameters when we work at
the limits of the allowed ranges.
I
Maybebut it is not supposed to cause such weird side effects
I ended up doing a git bisect myself on this issue:
https://bugs.freedesktop.org/show_bug.cgi?id=87682
(because it's an upstream bug)
Anyone any tips how to continue ?
** Bug watch added: freedesktop.org Bugzilla #87682
thom, VGA output is better. There is some flickering (no white lines,
though) but my D-Sub cable is cheap.
AFAIK, HP has disabled ATI PowerPlay in models with Athlon or Sempron
CPUs. Maybe that's the culprit.
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Mrerexx, could you perhaps test if your VGA output on that laptop is unaffected
?
My VGA-output seems to work without problems and only LVDS seems affected.
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Mrerexx, I can confirm this... I have the EXACT same laptop model (I rarely use
nowadays) and just checked it.
Indeed this model still has the same problems with the newer kernels.
Since this is an upstream bug, please follow this link [
https://bugzilla.kernel.org/show_bug.cgi?id=83461 ] and
Xubuntu 16.04 LTS still gives me artifacts. I'm using HP Compaq 6735s
with Athlon 64 X2 QL-60 & Radeon HD 3200.
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Title:
[ubuntu 14.04.2]
Great news!
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Title:
[ubuntu 14.04.2] Artefacts in radeon driver on kernel 3.16 and upwards
To manage notifications about this bug go to:
According to bugzilla:
(https://bugzilla.kernel.org/show_bug.cgi?id=83461)
32167016076f714f0e35e287fbead7de0f1fb179 seems to be the first bad
commit
bug seems to affect only the RS880 series and older
Christian König proposed a patch to limit the reference divider to fix
this and it seems to
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
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Title:
[ubuntu 14.04.2] Artefacts in radeon driver on kernel 3.16 and upwards
To get this fixed you'd need to do a git bisect between 3.13 and 3.16 to
find the bad commit, and then report the bug upstream to
bugs.freedesktop.org.
** Package changed: ubuntu => linux-meta (Ubuntu)
** Package changed: linux-meta (Ubuntu) => linux (Ubuntu)
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4.2, 4.3 same problem.
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Title:
[ubuntu 14.04.2] Artefacts in radeon driver on kernel 3.16 and upwards
To manage notifications about this bug go
Correction:
Works up to kernel 3.13 like stated before so LTS version up to 14.4.1
it works ok, any above that is "flicker storm"
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Also this bug is cross platform.
Tested on:
Lubuntu 14.4 14.10 15.4. 15.10
Ubuntu 14.4 14.10 15.4. 15.10
Fedora Live
AnitX 15
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Title:
[ubuntu
Confirmed, same problem on Radeon 3400. Going back to kernel 3.13 works,
everything above is flicker storm.
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Title:
[ubuntu 14.04.2] Artefacts
UPDATE:
kernel 3.13.0-66 (i686) -> no problem
kernel 3.16.0-33 (i686) -> blipstorm
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Title:
[ubuntu 14.04.2] Artefacts in radeon driver on
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: ubuntu
Status: New => Confirmed
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Title:
[ubuntu
also tried 3.13 kernel (trusty) with xserver-xorg-video-radeon-lts-
utopic: no problem
it looks like it is driver-independent.
it seems to be a kernel bug more than a xorg-video-driver bug.
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I downloaded and installed kernel 4.0.9 from mainline-ppa
Although the kernel runs OK and without painthe video didn't improve
still blipstorm
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Also tried with lts-utopic kernel and xorg : same results
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Title:
[ubuntu 14.04.2] Artefacts in radeon driver on kernel 3.16 and upwards
To
Okay, I narrowed it down to this:
Running on bare recovery console without Xorg : no problem
Running on bare normal (??framebuffered??) console without Xorg: blipstorm
The difference seems to me a loaded kernel driver...am I correct ??
If so, I could try out some new drivermodules or patches if
installed kernel 4.2.0-rc3 ... no change
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Title:
[ubuntu 14.04.2] Artefacts in radeon driver on kernel 3.16 and upwards
To manage
Hi, this might be related to the backported kernel or to some graphic
issue on your card... try to install the latest graphics drivers, the
lts-utopic or lts-vivid version maybe.
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Hi, thanks for looking into this.
I just installed the meta packages xserver-xorg-lts-vivid ( --install-
recommends) and linux-generic-lts-vivid and rebooted
Running now:
Xorg X Server version 1.17 (1:7.7+7ubuntu3-trusty1)
vmlinuz-3.19.0-25-generic with options radeon.dpm=1 vt.handoff=7
launchpad decided to file this as a bug against virtualbox ... strange
...I run on bare metal.
** Package changed: virtualbox (Ubuntu) = ubuntu
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