Fails to run (cause: missing RANDR extension?)

[Marco Rodrigues]

This bug was originally reported in Debian. Bug #562069

$ sudo startupmanager
Xlib: extension "RANDR" missing on display ":1.0".
Xlib: extension "RANDR" missing on display ":1.0".
RandR extension missing
Traceback (most recent call last):
  File "/usr/sbin/startupmanager", line 54, in <module>
    main()
  File "/usr/sbin/startupmanager", line 51, in main
    SumGui()
  File "/usr/share/startupmanager/gtk_frontend.py", line 166, in __init__
    self.resolution = utils.get_resolution()
  File "/usr/lib/pymodules/python2.5/bootconfig/utils.py", line 159, in
get_resolution return matches.group(1) + 'x' + matches.group(2)
AttributeError: 'NoneType' object has no attribute 'group'

It runs fine on another machine, where the RANDR extension is present in the X
server. However, as far as I know this extension is not mandatory and should
not cause a fatal error and inability to run the program.

[Frédéric Bourqui (fbourqui)]

I have almost the same problem :

$ sudo startupmanager
Traceback (most recent call last):
  File "/usr/sbin/startupmanager", line 54, in <module>
    main()
  File "/usr/sbin/startupmanager", line 51, in main
    SumGui()
  File "/usr/share/startupmanager/gtk_frontend.py", line 166, in __init__
    self.resolution = utils.get_resolution()
  File "/usr/lib/pymodules/python2.6/bootconfig/utils.py", line 159, in get_resolution
    return matches.group(1) + 'x' + matches.group(2)
AttributeError: 'NoneType' object has no attribute 'group'

i've traced back the problem to the output of xrandr that as chaged in the latest version :

$ xrandr
 SZ: Pixels Physical Refresh
 0 1024 x 768 ( 347mm x 260mm ) 60
 1 160 x 120 ( 54mm x 41mm ) 60
 2 320 x 240 ( 108mm x 81mm ) 60
 3 640 x 480 ( 217mm x 163mm ) 60
 4 800 x 600 ( 271mm x 203mm ) 60
*5 1914 x 1108 ( 648mm x 375mm ) *60
Current rotation - normal
Current reflection - none
Rotations possible - normal
Reflections possible - none
$ xrandr -v
xrandr program version 1.3.2
Server reports RandR version 1.1

in utils.py

def get_resolution():
    pipe = os.popen('xrandr')
    data = pipe.read()
    pipe.close()
    matches = re.search('current (\d+) x (\d+)', data)
    return matches.group(1) + 'x' + matches.group(2)

there is a search for current \d+ ...
this is not in the output of xrandr anymore.

changing the regexp search like this fix it :

    matches = re.search('\*\s*\d+\s+(\d+) x (\d+)', data)

[Frédéric Bourqui (fbourqui)]

--- utils.py 2010-05-07 12:42:32.000000000 +0200
***************
*** 155,161 ****
      pipe = os.popen('xrandr')
      data = pipe.read()
      pipe.close()
! matches = re.search('current (\d+) x (\d+)', data)
      return matches.group(1) + 'x' + matches.group(2)

  def set_resolution(resolution):
--- 155,161 ----
      pipe = os.popen('xrandr')
      data = pipe.read()
      pipe.close()
! matches = re.search('\*\s*\d+\s+(\d+) x (\d+)', data)
      return matches.group(1) + 'x' + matches.group(2)

  def set_resolution(resolution):