Public bug reported:

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.

** Affects: xserver-xorg-video-ati (Ubuntu)
     Importance: Undecided
         Status: New

** Description changed:

  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 is neither error in Xorg, xsession logs nor in dmesg after the
  resume.
+ 
+ 
+ This trouble doesn't occured with fglrx driver.

** Description changed:

  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 is neither error in Xorg, xsession logs nor in dmesg after the
- resume.
+ There isn't error either in Xorg, xsession logs or in dmesg after
+ resuming.
  
  
- This trouble doesn't occured with fglrx driver.
+ Notice that this trouble doesn't occured with fglrx driver.

-- 
flickering after resume from ram 
https://bugs.launchpad.net/bugs/318325
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