I spotted the update to the NVIDIA driver, so retried my workstation. GNOME Shell now starts so whatever was causing that problem has gone away.
I haven't had opportunity to use the workstation for a period though because everytime I try a write a new email with Evolution (either creating a new email or replying to an extant one, I get a kernel message and Evolution hangs. Killing Evolution and restarting it seems to work but not being able to create new email is a crucially blocking problem. The message I am getting is below and may have nothing to do with the problem this bug is about. Message from syslogd@anglides at Apr 14 11:15:49 ... kernel:[ 2770.680317] Oops: 0000 [#3] SMP Message from syslogd@anglides at Apr 14 11:15:49 ... kernel:[ 2770.680453] Stack: Message from syslogd@anglides at Apr 14 11:15:49 ... kernel:[ 2770.680469] Call Trace: Message from syslogd@anglides at Apr 14 11:15:49 ... kernel:[ 2770.680520] Code: df e8 a5 4c ff ff 48 89 ef 89 44 24 08 e8 d8 fc ff ff 8b 44 24 08 48 83 c4 38 5b 5d 41 5c 41 5d 41 5e 41 5f c3 f0 80 4f 48 04 c3 <48> 8b 7f b8 31 c0 48 85 ff 74 16 8b 57 30 83 e6 03 21 f2 39 f2 Message from syslogd@anglides at Apr 14 11:15:49 ... kernel:[ 2770.680565] CR2: ffffffffffffffb8 Message from syslogd@anglides at Apr 14 11:25:14 ... kernel:[ 3335.496720] Oops: 0000 [#4] SMP Message from syslogd@anglides at Apr 14 11:25:14 ... kernel:[ 3335.496855] Stack: Message from syslogd@anglides at Apr 14 11:25:14 ... kernel:[ 3335.496871] Call Trace: Message from syslogd@anglides at Apr 14 11:25:14 ... kernel:[ 3335.496923] Code: df e8 a5 4c ff ff 48 89 ef 89 44 24 08 e8 d8 fc ff ff 8b 44 24 08 48 83 c4 38 5b 5d 41 5c 41 5d 41 5e 41 5f c3 f0 80 4f 48 04 c3 <48> 8b 7f b8 31 c0 48 85 ff 74 16 8b 57 30 83 e6 03 21 f2 39 f2 Message from syslogd@anglides at Apr 14 11:25:14 ... kernel:[ 3335.496967] CR2: ffffffffffffffb8 -- Russel. ============================================================================= Dr Russel Winder t: +44 20 7585 2200 voip: sip:russel.win...@ekiga.net 41 Buckmaster Road m: +44 7770 465 077 xmpp: rus...@winder.org.uk London SW11 1EN, UK w: www.russel.org.uk skype: russel_winder
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