Red Hat Bugzilla – Bug 500990
blank display when starting X on radeon with KMS disabled
Last modified: 2014-06-18 03:38:59 EDT
On kernel-PAE-188.8.131.52-140.fc11.i686, with KMS disabled, starting X results in a blank screen (no display at all). It's also unresponsive to Ctrl-Alt-Backspace even though DontZap is off. The machine (a laptop) seems to be responsive, and if I hit the power button it eventually shuts down cleanly, so it seems to mainly be a problem with the display.
Booting with KMS enabled seems to "fix" this. But as it's a laptop, I still need the ability to suspend and hibernate, and that's not ever worked on this laptop with KMS enabled (see bug 471711).
Downgrading to kernel-PAE-184.108.40.206-126.fc11.i686 also corrects the issue.
The laptop has this display chip:
01:05.0 VGA compatible controller: ATI Technologies Inc Radeon XPRESS 200M 5955 (PCIE)
Let me know if you need other info.
Most likely a dupe of bug 500801
try upgrading xorg-x11-drv-ati from koji.
Confirmed. Updating xorg-x11-drv-ati fixed the problem.
Thanks for the tip.
*** This bug has been marked as a duplicate of bug 500801 ***