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[Bug 1479136] Re: [ubuntu 14.04.2] Artefacts in radeon driver on kernel 3.16 and upwards
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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[ubuntu 14.04.2] Artefacts in radeon driver on kernel 3.16 and upwards
Status in linux package in Ubuntu:
This is what I get if I run a kernel newer than 3.13: https://www.youtube.com/watch?v=nx2-Fvihzxg
sorry for the link, I just don't know how to describe these artefacts verbally.
(a storm of small horizontal moving blips from right to left ??)
Those artefacts appear as soon as new kernel is selected in GRUB, and
remain during the whole session.
The lastest kernel (from the main repository that is) working without
artifacts is v126.96.36.199. All later kernels have artifacts. All later
kernels also are either "-utopic" or "-vivid" instead of "-trusty",
but I do not know if it is related.
GPU: Mobility Radeon HD 3200 (RS780M)
System: Ubuntu Mate 14.04.2 32-bit
Kernels tested: 188.8.131.52 (and earlier) , 184.108.40.206 , 220.127.116.11
Only 18.104.22.168 (and earlier) are without problems.
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