** Changed in: linux
       Status: Confirmed => Fix Released

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  ubuntu 18.04 flickering screen with Radeon X1600

Status in Linux:
  Fix Released
Status in linux package in Ubuntu:

Bug description:
  my laptop: HP Compaq nx9420
  my grafic card: 
  01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] 
RV530/M56-P [Mobility Radeon X1600] (prog-if 00 [VGA controller])

  the bug-apport-file

  I start ubuntu 18.04 LTS (Kernel in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
  when starting the grafic-mode the flickering continues; so the screen is 

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

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