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Message #185154
[Bug 1479136] Re: [ubuntu 14.04.2] Artefacts in radeon driver on kernel 3.16 and upwards
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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https://bugs.launchpad.net/bugs/1479136
Title:
[ubuntu 14.04.2] Artefacts in radeon driver on kernel 3.16 and upwards
Status in linux package in Ubuntu:
Confirmed
Bug description:
Ubuntu-Mate 14.04.2
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 v3.13.0.59. 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: 3.13.0.59 (and earlier) , 3.16.0.45 , 3.19.0.25
Only 3.13.0.59 (and earlier) are without problems.
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