Red Hat Bugzilla – Bug 598162
no screen after resume on HP EliteBook 8440p
Last modified: 2011-06-27 13:11:21 EDT
Created attachment 418329 [details]
Description of problem:
SSIA, see logs.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
No screen, no backlight.
Laptop should work after resume from suspend.
Created attachment 418330 [details]
What kernel version are you using? A problem similar to this was fixed in 220.127.116.11-73.
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)?
Kernel 18.104.22.168-112.fc13.x86_64, will try mentioned options.
intel_iommu=off do not work for me.
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
- ./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.
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