Red Hat Bugzilla – Bug 192589
Backlight stays off on Asus S5A after resume
Last modified: 2015-03-04 20:17:05 EST
Description of problem:
Resume from suspend to ram fail on Asus S5A (also known as Asus S5000). The
graphics card is an intel 915.
The machine resumes, and I can log into it remotely with ssh, but the screen
remains blank and it doesn't respond to input from the keyboard, only the
special keys that acpi handles works (I can press the power button to turn it
of, but I can't kill X with ctrl-alt-bs or reboot with ctrl-alt-del)
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Select suspend from the gnome menu
2. Wait until the machine suspend.
3. Resume by pressing any key.
The screen remains blank, but I can still log into it with ssh.
The machine should resume from where it was before suspend...
I have tried to add acpi_sleep=s3_bios kernel parameter, but that didn't solve it.
The complete spec for the machine can be found here:
Created attachment 129779 [details]
I would suggest trying the 915resolution tool after resuming, or (failing
Have you tried this with newer version of pm-utils? There are quite a few
changes in the FC6 version of it that might fix the problem you're describing.
Read ya, Phil
I just tried it again. This time it actually resumed, after switching from X to
console and back again to bring the display back on. However, another problem
occured, which forced me to reboot. I attached the output from dmesg and
Created attachment 146326 [details]
Created attachment 146327 [details]
After upgrading to the latest kernel (2.6.19), suspend and resume works just
fine, except that I have to a text console, back to X and then manually adjust
the brightness of the display to turn the backlight back on.
FC5 is now end of life, so sadly this bug won't be fixed in this release. Is
this bug still presend in FC6 or F7?
As mentioned in comment #7, suspend now work ok on my laptop. I therefore
suggest that this bug should be closed.
You should not need to manually turn the backlight on, so I keep this open,
maybe this can be fixed, too.
I see above you tried acpi_sleep=s3_bios without success. How about
acpi_sleep=s3_mode or acpi_sleep=s3_bios,s3_mode. If either of these later two
work, you could submit a quirk for your laptop to Richard Hughes, and it would
then just work with a future pmutils version.
My laptop now runs F-7, and the backlight issue have been fixed in this release.
Whether the problem has been solved by a new kernel or an updated pmutils
package, I do not know.