On 10/28/10 04:27, Jörg Barfurth wrote:
Dave McGuire schrieb:
On 10/27/10 1:34 PM, Bob Doolittle wrote:
Anyone tried a fresh install of SRSS 4.2 on Ubuntu 10.10? It appears
that gdm-2.20 was removed from the repository. I have downloaded a
gdm-2.20 package but wanted to see if anyone has already run down this
road and might steer me out of trouble :)

2.20 ought to work. Avoid 2.21 or later, however.

  Do we know the nature of the 2.21 incompatibility?  I'm just curious.


Despite the innocuous minor version change, GDM 2.21 was a complete rewrite of 
GDM, which significantly changed architecture and brought along several feature 
regressions.

One of these feature regressions is loss of support for multiple 'seats', i.e. 
sets of monitor and input devices. There are other changes that also impact Sun 
Ray features.

Sun Rays are represented on the server as multiple full-featured seats and 
require the capability to dynamically add and remove seats. Patches (from 
Sun/Oracle) to implement this are available in the GDM and ConsoleKit projects, 
but have not yet been accepted into the main development line.

I should mention (again) that this looks like a major roadblock for people 
running SRS on unsupported Linux distros. The patches have been available for 
review for several months now and there has been no public indication that the 
GDM maintainers (who happen to work for Red Hat) are planning to give them 
consideration in the foreseeable future. Of course you can always apply the 
patches yourselves.

Most likely if you are serious about wanting to continue to use SRS on 
unsupported Linux distros you will need to file bugs against your distros once 
they pick up GDM 2.21 and lobby for this change to be picked up. Only by 
expressing your needs will the distro maintainers be able to properly assess 
the significance and importance of supporting this feature.

You might also consider sending a note to the GDM FOSS community at 
[email protected] expressing the importance you feel this feature warrants, 
and encourage distros to pick up the multi-seat patches for GDM and ConsoleKit 
submitted by Sun.

These patches will be *required* for any SRS operation with GDM version 2.21 or 
later (e.g. as delivered in RHEL 6).

-Bob

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