xdmcp/gdmchooser breakage from 2.20.0-0ubuntu3 -> 4
Bug #152824 reported by
Alex Williamson
This bug report is a duplicate of:
Bug #152505: gdmgreeter segfaults when XRandR is not available.
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Affects | Status | Importance | Assigned to | Milestone | |
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Ubuntu |
New
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Undecided
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Unassigned | ||
gdm (Ubuntu) |
New
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Undecided
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Unassigned |
Bug Description
Upgrading from gdm_2.20.0-0ubuntu3 to gdm_2.20.0-0ubuntu4 broken my xdmcp setup. I have the following in /etc/gdm/
[daemon]
RemoteGreeter=
[xdmcp]
Enable=true
On a remote system, I run:
Xnest -query <server> :1
With ubuntu3, this works fine. With ubuntu4, the Xnest flashes between the X root weave and a white background a few times, then dies. I also end up with a /var/crash/
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I applied the patch from 152505 and it does allow Xnest to connect, however, there's still a problem. I have a thin client running an nfs root installation of Fiesty. It connects to a gutsy server with xdmcp. This configuration still fails with 2.20.0-0ubuntu4 (plus 152505 patch), but works with ubuntu3. The client does support RandR, and I see this in the X output:
(==) RandR enabled
(II) Initializing built-in extension RANDR
If I remove patch 63 from ubuntu4, it works like ubuntu3. Also, if I comment out the RemoteGreeter line in my gdm.conf-custom file (RemoteGreeter= /usr/lib/ gdm/gdmgreeter) it works. Unless the fix committed for 152505 is significantly different from the one in the comments, patch 63 definitely still introduces a regression in xdmcp support.