Bug#878221: linux-image-4.9.0-4-amd64: Screen flickers randomly with Radeon R9 270X since upgrade from 4.9.0-3 to 4.9.0-4

The kernel update "4.9.0-6-amd64 #1 SMP Debian 4.9.82-1+deb9u3 (2018-03-02) x86_64 GNU/Linux" didn't fix the problem for my Dell U2415 (connected to AMD Radeon R9 270X).

Bug#878221: linux-image-4.9.0-4-amd64: Screen flickers randomly with Radeon R9 270X since upgrade from 4.9.0-3 to 4.9.0-4

As a side note: I still have some older kernel version from stretch-backports on my PC. I tried it with the oldest one of these kernels. The problem doesn't occur with the kernel "4.12.0-0.bpo.2-amd64 #1 SMP Debian 4.12.13-1~bpo9+1 (2017-09-28) x86_64 GNU/Linux".

Bug#878221: linux-image-4.9.0-4-amd64: Screen flickers randomly with Radeon R9 270X since upgrade from 4.9.0-3 to 4.9.0-4

Am 29.01.2018 um 17:44 schrieb Yves-Alexis Perez: > On Wed, 2017-10-11 at 11:05 +0200, Benjamin Sygnat wrote: >> - The screen (Dell U2415, resolution 1920x1200) which is connected to my AMD >> Radeon R9 270X (on DisplayPort-0) occasionally flickers every few seconds. >> The >> flickering appears t

Bug#878221: linux-image-4.9.0-4-amd64: Screen flickers randomly with Radeon R9 270X since upgrade from 4.9.0-3 to 4.9.0-4

I realized that the kernel I suggested as workaround (linux-image-4.9.0-3-amd64) didn't completely solve the flickering problem. However, it made the flickering occur very rarely. I can confirm that the kernel "4.14.0-3-amd64 #1 SMP Debian 4.14.13-1 (2018-01-14)" from stretch-backports causes no f