Bug 1222007

Summary: [abrt] gnome-settings-daemon: main(): gsd-backlight-helper killed by SIGSEGV
Product: [Fedora] Fedora Reporter: Marco Nolden <bzf>
Component: gnome-settings-daemonAssignee: Bastien Nocera <bnocera>
Status: CLOSED UPSTREAM QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 22CC: bnocera, bojov, bzf, fmuellner, kalevlember, mkasik, ofourdan, rmatos, rstrode, silhano, tiagomatos
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Unspecified   
URL: https://retrace.fedoraproject.org/faf/reports/bthash/7f32e2f4162cc5f6ecf291e9e143e0a436c8d332
Whiteboard: abrt_hash:dceabc10a78a9df42d3b20e42920cbb2fcd3e26f
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2015-05-15 16:15:26 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
File: backtrace
none
File: cgroup
none
File: core_backtrace
none
File: dso_list
none
File: environ
none
File: limits
none
File: maps
none
File: mountinfo
none
File: namespaces
none
File: open_fds
none
File: proc_pid_status none

Description Marco Nolden 2015-05-15 13:03:53 UTC 
Version-Release number of selected component:
gnome-settings-daemon-3.16.0-1.fc22

Additional info:
reporter:       libreport-2.5.1
backtrace_rating: 4
cmdline:        /usr/libexec/gsd-backlight-helper --get-max-brightness
crash_function: main
executable:     /usr/libexec/gsd-backlight-helper
global_pid:     1514
kernel:         4.0.0-0.rc5.git4.1.fc22.x86_64
runlevel:       unknown
type:           CCpp
uid:            42
var_log_messages: [System Logs]:\n-- Logs begin at Fri 2015-05-15 16:44:43 CEST, end at Fri 2015-05-15 14:44:53 CEST. --

Truncated backtrace:
Thread no. 1 (0 frames)
Comment 1 Marco Nolden 2015-05-15 13:03:56 UTC 
Created attachment 1025841 [details]
File: backtrace
Comment 2 Marco Nolden 2015-05-15 13:03:57 UTC 
Created attachment 1025842 [details]
File: cgroup
Comment 3 Marco Nolden 2015-05-15 13:03:58 UTC 
Created attachment 1025843 [details]
File: core_backtrace
Comment 4 Marco Nolden 2015-05-15 13:03:59 UTC 
Created attachment 1025844 [details]
File: dso_list
Comment 5 Marco Nolden 2015-05-15 13:04:01 UTC 
Created attachment 1025845 [details]
File: environ
Comment 6 Marco Nolden 2015-05-15 13:04:02 UTC 
Created attachment 1025846 [details]
File: limits
Comment 7 Marco Nolden 2015-05-15 13:04:03 UTC 
Created attachment 1025847 [details]
File: maps
Comment 8 Marco Nolden 2015-05-15 13:04:04 UTC 
Created attachment 1025848 [details]
File: mountinfo
Comment 9 Marco Nolden 2015-05-15 13:04:06 UTC 
Created attachment 1025849 [details]
File: namespaces
Comment 10 Marco Nolden 2015-05-15 13:04:07 UTC 
Created attachment 1025850 [details]
File: open_fds
Comment 11 Marco Nolden 2015-05-15 13:04:08 UTC 
Created attachment 1025851 [details]
File: proc_pid_status
Comment 12 Rui Matos 2015-05-15 13:48:07 UTC 
Can you post the output of:

$ cat /sys/devices/virtual/backlight/fujitsu-laptop/brightness
$ cat /sys/devices/virtual/backlight/fujitsu-laptop/max_brightness

?
Comment 13 Marco Nolden 2015-05-15 15:07:15 UTC 
$ cat /sys/devices/virtual/backlight/fujitsu-laptop/brightness
0
$ cat /sys/devices/virtual/backlight/fujitsu-laptop/max_brightness
-1

The crash happened immediately after install. The kernel has been upgraded to 4.0.3-300.fc22.x86_64 now so I don't know the output of these commands before.
Comment 14 Rui Matos 2015-05-15 15:12:08 UTC 
We'll fix the crash but backlight adjustment won't work for this laptop.

Is there any other devices listed under /sys/devices/virtual/backlight/ ?

Did backlight adjustment work before?
Comment 15 Marco Nolden 2015-05-15 16:00:33 UTC 
(In reply to Rui Matos from comment #14)
> We'll fix the crash but backlight adjustment won't work for this laptop.
> 

It's actually a desktop machine.

> Is there any other devices listed under /sys/devices/virtual/backlight/ ?
> 
No, only the fujitsu

> Did backlight adjustment work before?

See above ;)

And I rebooted the 4.0.0-0.rc5.git4.1.fc22.x86_64 kernel, same outputs.
Comment 16 Rui Matos 2015-05-15 16:15:26 UTC 
(In reply to Marco Nolden from comment #15)
> It's actually a desktop machine.

Ok thanks, but that's a kernel bug since it makes the rest of the system assume that there's a backlight when there actually isn't one. You should report that as a kernel bug.

The crash here will get fixed in the next gnome stable release.