system-config-printer crashes during configuration

[Carthik Sharma]

system-config-printer crashes when trying to configure printers.

Here's the output when it was started from the command line using:
system-config-printer

$ system-config-printer
params.c:OpenConfFile() - Unable to open configuration file "/home/user/.smb/smb.conf":
       No such file or directory
params.c:OpenConfFile() - Unable to open configuration file "/home/user/.smb/smb.conf.append":
       No such file or directory
params.c:OpenConfFile() - Unable to open configuration file "/home/user/.smb/smb.conf":
       No such file or directory
params.c:OpenConfFile() - Unable to open configuration file "/home/user/.smb/smb.conf.append":
       No such file or directory
got no contact to IPC$
Caught non-fatal exception. Traceback:
File "/usr/share/system-config-printer/newprinter.py", line 1975, in on_tvSMBBrowser_row_expanded
   smbc_auth.failed (e)
File "/usr/share/system-config-printer/pysmb.py", line 182, in failed
   raise exc
TimedOutError: (110, 'Connection timed out')
Continuing anyway..

**** Incorrect IEEE 1284 Device ID: [u'drv:///hpcups.drv/hp-color_laserjet_cp2025dn-pcl3.ppd', u'drv:///hpijs.drv/hp-color_laserjet_cp2025dn-hpijs-pcl3.ppd', u'hplip:0/ppd/hplip/HP/hp-color_laserjet_cp2025dn-ps.ppd']
**** Actual ID is MFG:Hewlett-Packard;MDL:HP Color LaserJet CP2025dn;
**** Please report a bug against the HPLIP component
**** Incorrect IEEE 1284 Device ID: [u'drv:///hpcups.drv/hp-color_laserjet_cp2025dn-pcl3.ppd', u'drv:///hpijs.drv/hp-color_laserjet_cp2025dn-hpijs-pcl3.ppd', u'hplip:0/ppd/hplip/HP/hp-color_laserjet_cp2025dn-ps.ppd']
**** Actual ID is MFG:Hewlett-Packard;MDL:HP Color LaserJet CP2025dn;
**** Please report a bug against the HPLIP component
Traceback (most recent call last):
 File "/usr/share/system-config-printer/asyncipp.py", line 197, in send_reply
   handler (self._conn, result)
 File "/usr/share/system-config-printer/asyncconn.py", line 93, in reply_handler
   self._reply_handler (self, self._reply_data, *args)
 File "/usr/share/system-config-printer/asyncconn.py", line 205, in _subst_reply_handler
   reply_handler (self, *args)
 File "/usr/share/system-config-printer/ppdcache.py", line 77, in <lambda>
   self._got_ppd3 (c, name, r, callback),
 File "/usr/share/system-config-printer/ppdcache.py", line 136, in _got_ppd3
   self._cache[name] = file (filename)
IOError: [Errno 2] No such file or directory: '/tmp/4f2b43f39082c'

[Till Kamppeter (till-kamppeter)]

Which version of Ubuntu and which version of system-config-printer are you using?

Tim, can it be that this is caused by the changes on PPD caching in 1.3.8?

[Tim Waugh (twaugh)]

Is it reproducible? I've seen one other report of this but can't see a cause:
  https://bugzilla.redhat.com/show_bug.cgi?id=786232

The ppdcache.py changes between 1.3.7 and 1.3.8 look safe to me, and amount to:
1. Moving some debugprints around
2. Removing unused code for handling pycups < 1.9.50
3. Making sure data is written to the temporary file (and fd reclaimed) before we read it back with cups.PPD