Red Hat Bugzilla – Bug 249482
Screen too dark when resuming from standby
Last modified: 2007-11-30 17:12:11 EST
Description of problem:
With recent kernels I am at last able to suspend to RAM and resume on a Vaio
SZ3XP. However, when I resume the screen is far too dark. Even if I modprobe
the sony_laptop module, echo-ing values into
/sys/class/backlight/sony/brightness doesn't have any effect.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Suspend laptop to RAM
Screen is far too dark and the brightness cannot be increased
The screen should have normal brightness
Hardware details are here:
Created attachment 159894 [details]
dmesg output showing suspend and resume
Me too on a Dell XPS M1210.
I'm now running rawhide on the Vaio and this problem is still there.
Hello Adam, Thomas,
I'm reviewing this bug as part of the kernel bug triage project, an attempt to
isolate current bugs in the fedora kernel.
I am CC'ing myself to this bug and will try and assist you in resolving it if I can.
There hasn't been much activity on this bug for a while. Could you tell me if
you are still having problems with the latest kernel? If you are, could you try
rmmoding the sony_laptop module before suspending and then re-loading on resume
and see if this works.
If the problem no longer exists then please close this bug or I'll do so in a
few days if there is no additional information lodged.
The last time suspending to RAM worked (which was a week or so ago), the
darkened screen problem had been fixed.
As of today, I can no longer suspend to RAM, so I can't really confirm it currently.
I'm running rawhide now too (F8T2+) and the problem persists. I think this is a
HAL quirks problem. I made a launcher that just does a 'pm-suspend
--quirk-vbe-post' and it works fine like that.
I've opened a bug for my laptop about this here:
(In reply to comment #6)
> I'm running rawhide now too (F8T2+) and the problem persists. I think this is a
> HAL quirks problem. I made a launcher that just does a 'pm-suspend
> --quirk-vbe-post' and it works fine like that.
Does the above work for you?
Yes, that does work, so feel free to close this bug.