Bug 500990 - blank display when starting X on radeon with KMS disabled
blank display when starting X on radeon with KMS disabled
Status: CLOSED DUPLICATE of bug 500801
Product: Fedora
Classification: Fedora
Component: kernel (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Kernel Maintainer List
Fedora Extras Quality Assurance
: Regression
Depends On:
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Reported: 2009-05-15 08:01 EDT by Jeff Layton
Modified: 2014-06-18 03:38 EDT (History)
5 users (show)

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Doc Type: Bug Fix
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Last Closed: 2009-05-15 21:48:00 EDT
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Description Jeff Layton 2009-05-15 08:01:32 EDT
On kernel-PAE-, 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- 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.
Comment 1 Yanko Kaneti 2009-05-15 09:16:58 EDT
Most likely a dupe of bug 500801
try upgrading xorg-x11-drv-ati from koji.
Comment 2 Jeff Layton 2009-05-15 21:48:00 EDT
Confirmed. Updating xorg-x11-drv-ati fixed the problem.

Thanks for the tip.

*** This bug has been marked as a duplicate of bug 500801 ***

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