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[micsu <micsu@xxxxxxxxxxx>]

I have the same problem with xUbuntu 14.04 (Trusty Tahr)
I guess it will never be fixed, so we have to install windows xp instead :(

Laptop: Acer Aspire 3104 (AMD Sempron 3500+)
GPU: ATI Radeon Xpress 1100
System : xUbuntu 14.04 32 bit (Trusty Tahr)

There is one workaround, but it requires nomodeset (and the quirks suggested by Chris at #65).
Using nomodeset is not a good idea, since it prevents all graphics accelerations.

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https://bugs.launchpad.net/bugs/318325

Title:
  [X1100] flickering after resume from ram

Status in X.org XServer - ATI gfx chipset driver:
  Confirmed
Status in xserver-xorg-video-ati package in Ubuntu:
  Confirmed
Status in xserver-xorg-video-ati package in Fedora:
  New

Bug description:
  Binary package hint: xserver-xorg-video-radeon

  System : Ubuntu 8.10 (up to date)
  GPU : ATI express X1100
  Video driver : radeon

  Steps to reproduce :
  - put the computer on standby
  - resume from ram
  => the screen will flicker while CPU activity is not high

  workaround :
  - just launch an infinite loop that consume CPU : $ while true; do echo >/dev/null; done
  => the screen won't flicker while the CPU is use (even if only one core is being used)

  There isn't error either in Xorg, xsession logs or in dmesg after
  resuming.

  
  Notice that this trouble doesn't occured with fglrx driver.

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