Bug 192589

Summary: Backlight stays off on Asus S5A after resume
Product: [Fedora] Fedora Reporter: Trond Danielsen <trond.danielsen>
Component: pm-utilsAssignee: Phil Knirsch <pknirsch>
Severity: medium Docs Contact:
Priority: medium    
Version: 6CC: dedourek, ncunning, opensource, rvokal
Target Milestone: ---   
Target Release: ---   
Hardware: i686   
OS: Linux   
Fixed In Version: FC7 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2007-12-10 17:45:17 EST Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
Description Flags
dmesg output
/var/log/messages none

Description Trond Danielsen 2006-05-21 06:43:24 EDT
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):

How reproducible:
Every time.

Steps to Reproduce:
1. Select suspend from the gnome menu
2. Wait until the machine suspend.
3. Resume by pressing any key.
Actual results:
The screen remains blank, but I can still log into it with ssh.

Expected results:
The machine should resume from where it was before suspend...

Additional info:
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:
Comment 1 Trond Danielsen 2006-05-21 06:43:24 EDT
Created attachment 129779 [details]
Comment 2 Nigel Cunningham 2006-12-03 18:11:33 EST
I would suggest trying the 915resolution tool after resuming, or (failing 
that) vbetool.
Comment 3 Phil Knirsch 2007-01-23 11:01:58 EST
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
Comment 4 Trond Danielsen 2007-01-23 13:13:05 EST
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
Comment 5 Trond Danielsen 2007-01-23 13:13:49 EST
Created attachment 146326 [details]
dmesg output
Comment 6 Trond Danielsen 2007-01-23 13:17:33 EST
Created attachment 146327 [details]
Comment 7 Trond Danielsen 2007-02-03 04:24:47 EST
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.
Comment 8 Till Maas 2007-08-30 11:05:13 EDT
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?
Comment 9 Trond Danielsen 2007-09-04 08:37:04 EDT
As mentioned in comment #7, suspend now work ok on my laptop. I therefore
suggest that this bug should be closed.
Comment 10 Till Maas 2007-09-04 08:59:09 EDT
You should not need to manually turn the backlight on, so I keep this open,
maybe this can be fixed, too.
Comment 11 Nigel Cunningham 2007-09-10 18:49:51 EDT
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.
Comment 12 Trond Danielsen 2007-09-15 16:28:00 EDT
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.