Bug 468127 - Blank X screen with kernel-PAE, works with i686 kernel
Blank X screen with kernel-PAE, works with i686 kernel
Product: Fedora
Classification: Fedora
Component: kernel (Show other bugs)
i686 Linux
medium Severity high
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Assigned To: Dave Airlie
Fedora Extras Quality Assurance
: 470985 (view as bug list)
Depends On:
  Show dependency treegraph
Reported: 2008-10-22 21:11 EDT by Joe Ammond
Modified: 2008-12-27 05:17 EST (History)
4 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2008-12-26 11:03:34 EST
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Xorg.0.log from PAE kernel (29.88 KB, application/octet-stream)
2008-10-22 21:11 EDT, Joe Ammond
no flags Details
dmesg from -PAE kernel (38.66 KB, text/plain)
2008-10-22 21:11 EDT, Joe Ammond
no flags Details
Xorg.0.log from i686 kernel (85.34 KB, application/octet-stream)
2008-10-22 21:12 EDT, Joe Ammond
no flags Details
dmesg from i686 kernel (39.25 KB, text/plain)
2008-10-22 21:12 EDT, Joe Ammond
no flags Details

  None (edit)
Description Joe Ammond 2008-10-22 21:11:02 EDT
Created attachment 321227 [details]
Xorg.0.log from PAE kernel

Description of problem:
If I boot my laptop with kernel-PAE, X starts to probe the hardware but stays blank. In dmesg I see: 

[drm:i915_driver_load] *ERROR* failed to enable MSI
[drm] Initialized i915 1.6.0 20080730 on minor 0

The keyboard is unresponsive as well. The machine is reachable from the network during this.

Hardware is:
HP Compaq 6710b laptop
Intel(R) Core(TM)2 Duo CPU     T7500  @ 2.20GHz
i965 chipset

When booted with a non-PAE kernel, X works fine.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Install kernel-PAE
2. Boot kernel-PAE
Actual results:
X fails to start.

Expected results:
X starts.

Additional info:
Comment 1 Joe Ammond 2008-10-22 21:11:42 EDT
Created attachment 321228 [details]
dmesg from -PAE kernel
Comment 2 Joe Ammond 2008-10-22 21:12:15 EDT
Created attachment 321229 [details]
Xorg.0.log from i686 kernel
Comment 3 Joe Ammond 2008-10-22 21:12:37 EDT
Created attachment 321230 [details]
dmesg from i686 kernel
Comment 4 Jürgen Botz 2008-11-16 14:37:11 EST
*** Bug 470985 has been marked as a duplicate of this bug. ***
Comment 5 Jürgen Botz 2008-11-16 14:44:53 EST
Ok, I have the same problem on a Thinkpad T61 model 8897-CTO (Intel 965 graphics, 1400x1050 display) with 4GB RAM.  Anaconda installed only the PAE kernel (presumably because I have 4GB) and until seeing this entry I hadn't thought of trying a non-PAE kernel, so I filed bug # 470985.  Now I have, and it works, so I can confirm that this is an issue with the PAE kernel and I've marked my prior report a duplicated of this one.

It seems likely that everyone with more the 3GB and i965 graphics will encounter this when installing F10, so I think this bug should be bumped up in priority.
Comment 6 Jürgen Botz 2008-11-16 17:25:34 EST
kernel appears to resolve the issue.
Comment 7 Michael Wise 2008-11-19 06:34:21 EST
kernel has fixed the problem of a blank screen.  now when compiz is enabled as soon as I log in, the screen goes white.  I'm running on a Thinkpad T61 with and intel 965 graphics.  If this is not related, I'll be happy to open a new bug.
Comment 8 Jürgen Botz 2008-11-19 08:18:21 EST
I get the same thing with compiz, and I also get an X lockup when trying to switch users (i.e. starting a second X server).  The lockup looks and feels the same as the one we had on starting the first X server with kernels release < -109.
Comment 9 Jürgen Botz 2008-11-19 11:14:43 EST
Ok, just to be clear...

- With PAE kernel compiz doesn't work, gives white screen and locks
  up.  With regular kernel it works.
- With PAE kernel second Xserver (for user-switch) locks up while
  starting, with regular kernel it works.
Comment 10 Bug Zapper 2008-11-25 23:08:37 EST
This bug appears to have been reported against 'rawhide' during the Fedora 10 development cycle.
Changing version to '10'.

More information and reason for this action is here:
Comment 11 Joe Ammond 2008-12-26 11:03:34 EST
The latest round of updates fixes this problem for me. I'd say this can be closed.
Comment 12 Jürgen Botz 2008-12-27 05:17:18 EST
Not fixed, just worked-around.  Intel graphics still doesn't work correctly with PAE kernel (for example framerate in glxgears in PAE is about 20% of framerate in standard kernel.)

This is certainly an upstream issue, but it should be in Fedora bugzilla to track it.

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