i launched xscreensaver today, which i haven't done for awhile. within
a half hour, the display locked up. likely it's the same bug. and
likely that this bug has been around for many releases. back in natty i
used to run xscreensaver more often, and used to see this bug alot.
today i'm running saucy, as i do most of the time these days, trusty is
just a tad too bleeding edge for daily work for me. but so anyway,
today, the screen is still showing the antinspect screensaver, but the
xscreensaver process is gone. completely. crashed apparently, along
with several other X processes i had running.
the misbehaviour of the screen at this time is interesting. when i
press ctl-alt-F7, i see the crashed antinspect xscreensaver. when i
press ctl-alt-Fn, where n is {[12345689],10,11,12}, i see what i guess
to be leftover from boot messages, perhaps what i should see (only!) on
ctl-alt-F1. also seeing it in place of all the other VTs is bizarre.
at the same time that xscreensaver crashed, mplayer stopped playing
(kfai) for about a minute, then resumed.
i can login via ssh and generate a process list, which does not contain
xscreensaver nor the other X processes that crashed. attached. also i
just happen to have had output redirected for most of those X apps.
those outputs are also attached.
and here is a section from the "screen" session where i had launched
various X apps which also died along with xscreensaver. (jackd didn't
die, tho it did generate some complaints.) [1] was blueman-manager, [2]
was linphone, [3] was pavucontrol, [4] was vncviewer, [5] was oclock,
[7] was xscreensaver, [8] was firefox:
$ blueman-manager: Fatal IO error 11 (Resource temporarily unavailable) on X
server :0.0.
(pavucontrol:2453): Gdk-WARNING **: pavucontrol: Fatal IO error 11
(Resource temporarily unavailable) on X server :0.0.
XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":0.0"
after 2925 requests (2685 known processed) with 0 events remaining.
[5] Exit 1 oclock -geometry 1019x975+1+-104 -fg green
-transparent
JackEngine::XRun: client = alsa-jack.rawjackP.3652.0 was not finished, state =
Triggered
JackEngine::XRun: client alsa-jack.rawjackP.3812.0 finished after current
callback
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = alsa-jack.rawjackP.3652.0 was not finished, state =
Triggered
JackEngine::XRun: client alsa-jack.rawjackP.3812.0 finished after current
callback
JackAudioDriver::ProcessGraphAsyncMaster: Process error
[4] Exit 1 vncviewer -FullColor -PreferredEncoding=ZRLE
-ZlibLevel=9 -AutoSelect=0 -MenuKey F7 $(vncviewer -h 2>&1|grep -q
XDialog&&echo -XDialog) -geometry 1024x768--2--1 "$@" 2>
/tmp/vncviewer$1:$(date +%F%a%T).err
[3] Exit 1 pavucontrol
[1] Exit 1 blueman-manager > /tmp/blueman-manager$(date
+%F%a%T).err
[2] Exit 1 linphone 2> /tmp/linphone$(date +%F%a%T).err
JackEngine::XRun: client = alsa-jack.rawjackP.3652.0 was not finished, state =
Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
[8]+ Exit 1 FLASH_ALSA_DEVICE=plug:SLAVE=rawjack firefox >
/tmp/firefox$(date +%F%a%T).ort 2>&1
[7]- Exit 1 nice -22 xscreensaver -no-splash
-no-capture-stderr > /tmp/xscreensaver$(date +%F%a%T).ort 2>&1
JackPosixProcessSync::LockedTimedWait error usec = 426660 err = Connection
timed out
JackEngine::ClientDeactivate wait error ref = 2 name = alsa-jack.rawjackP.3652.0
JackEngine::ClientKill ref = 2 cannot be removed from the graph !!
JackEngine::XRun: client = alsa-jack.rawjackP.3812.0 was not finished, state =
Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = alsa-jack.rawjackP.3812.0 was not finished, state =
Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
** Attachment added: "ps output"
https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1254880/+attachment/3995255/+files/psh
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https://bugs.launchpad.net/bugs/1254880
Title:
lightdm not visible upon reboot
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