Ubuntu
linux package

  1. Bug #568711
  2. Comment #27

Comment 27 for bug 568711

Revision history for this message
Stuart (stuartneilson) wrote :

Disabling modeset in grub appears to work.

I had an error "[drm:rs400_gart_adjust_size] *ERROR* Forcing to 32M GART size (because of ASIC bug ?)" in dmesg, and cured this error by adding "radeon.modeset=0"" to GRUB_CMDLINE_LINUX_DEFAULT and then running sudo update-grub2, as per https://bugs.launchpad.net/ubuntu/+source/linux/+bug/562843 (Bug #562843).

This looks nothing like the Ubuntu 10.04 Release Notes "Working around bugs in the new kernel video architecture" (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/533784 and https://bugs.launchpad.net/ubuntu/+source/linux/+bug/541501), but may be related anyway.

The option "nomodeset" may work for other hardware.

Ubuntu Wiki had some other workarounds at https://wiki.ubuntu.com/X/Bugs/Lucidi8xxFreezes

I have not had a freeze or failure to resume since disabling modeset in grub.