gnome-power-manager dies on startup with BadRequest error

[[mdw]]

Binary package hint: gnome-power-manager

This is gnome-power-manager 2.24.2-2ubuntu8 (jaunty).

[crybaby ~]gnome-power-manager --no-daemon --sync
The program 'gnome-power-manager' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadRequest (invalid request code or no such operation)'.
  (Details: serial 187 error_code 1 request_code 154 minor_code 25)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the --sync command line
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)

A little playing with gdb shows that it's caused by a call to XRRGetScreenResourcesCurrent in gpm_brightness_xrandr_update_cache (src/gpm-brightness-xrandr.c), added by debian/patches/79-randr13-speed-fix.patch as part of #307306.

But the fix is wrong, as mentioned in further discussion on that bug: the call is guarded by #ifdef but that only helps if the code is compiled against an old client library (which can anyway be prevented by appropriate Build-Depends). The problem is that my X server doesn't provide Xrandr 1.3, because I'm holding it back (because of the Intel graphics driver bug warned of in the Jaunty release notes).

I've attached a fixed version of the patch which (a) stores the server's Xrandr version number, and (b) checks it before calling the offending function, falling back to XRRGetScreenResources.

ProblemType: Bug
ACAdapter: Present
Architecture: i386
Battery: Present
CPUScaling: Present
DistroRelease: Ubuntu 9.04
LaptopPanel: Present
Package: gnome-power-manager 2.24.2-2ubuntu8
ProcEnviron:
 LC_COLLATE=POSIX
 PATH=(custom, user)
 LANG=en_GB.utf8
 SHELL=/bin/bash
SourcePackage: gnome-power-manager
Uname: Linux 2.6.28-11-generic i686

[Scott Howard (showard314)]

Thank you for your bug report. This bug (comments and patch) has been reported to the developers of the software. You can track it and make comments at: http://bugzilla.gnome.org/show_bug.cgi?id=568162

It would be best to continue discussions on the patch in GPM over int he gnome bugzilla.

[Martin Mai (mrkanister-deactivatedaccount-deactivatedaccount)]

This should be fixed in Ubuntu 10.10 now. Thanks for reporting.