Bug 598162 - no screen after resume on HP EliteBook 8440p
Summary: no screen after resume on HP EliteBook 8440p
Alias: None
Product: Fedora
Classification: Fedora
Component: xorg-x11-drv-nouveau
Version: 13
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Ben Skeggs
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2010-05-31 15:44 UTC by Tomas Pelka
Modified: 2011-06-27 17:11 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2011-06-27 17:11:21 UTC
Type: ---

Attachments (Terms of Use)
dmesg before (120.22 KB, text/plain)
2010-05-31 15:44 UTC, Tomas Pelka
no flags Details
dmesg after (120.41 KB, text/plain)
2010-05-31 15:45 UTC, Tomas Pelka
no flags Details

Description Tomas Pelka 2010-05-31 15:44:51 UTC
Created attachment 418329 [details]
dmesg before

Description of problem:
SSIA, see logs.

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

How reproducible:

Steps to Reproduce:
Actual results:
No screen, no backlight.

Expected results:
Laptop should work after resume from suspend.

Additional info:

Comment 1 Tomas Pelka 2010-05-31 15:45:29 UTC
Created attachment 418330 [details]
dmesg after

Comment 3 Ben Skeggs 2010-05-31 23:43:35 UTC
What kernel version are you using?  A problem similar to this was fixed in

Also, if using at least that kernel and this still happens, how do you go if you also boot with VT-d disabled in your bios (or intel_iommu=off on kernel commandline)?

Comment 4 Tomas Pelka 2010-06-02 12:30:46 UTC
Kernel, will try mentioned options.

Comment 5 Tomas Pelka 2010-06-02 15:37:24 UTC
intel_iommu=off do not work for me.

Comment 6 Ben Skeggs 2010-06-03 02:00:02 UTC
Okay.  Well my only real suspect (older kernel without the fix) is ruled out.

Could you boot with "log_buf_len=1M drm.debug=14" appended to your kernel options and get me a new dmesg log please?

Also, if you can access it over ssh it'd be great if you could:
- boot with "nomodeset 3"
- echo mem > /sys/power/state
- resume
- ./vbtracetool -lp 2>post.iolog
- ./vbtracetool -w 2>vbios.rom
- mail post.iolog and vbios.rom to me

You can get vbtracetool from http://cgit.freedesktop.org/~stuart/vbtracetool, you'll need pciutils-devel installed to build it.

Thanks :)

Comment 7 Bug Zapper 2011-06-02 12:36:57 UTC
This message is a reminder that Fedora 13 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
and issuing updates for Fedora 13.  It is Fedora's policy to close all
bug reports from releases that are no longer maintained.  At that time
this bug will be closed as WONTFIX if it remains open with a Fedora 
'version' of '13'.

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Comment 8 Bug Zapper 2011-06-27 17:11:21 UTC
Fedora 13 changed to end-of-life (EOL) status on 2011-06-25. Fedora 13 is 
no longer maintained, which means that it will not receive any further 
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of 
Fedora please feel free to reopen this bug against that version.

Thank you for reporting this bug and we are sorry it could not be fixed.

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