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List:       linux-raid
Subject:    Re: Debugging system hangs
From:       Wols Lists <antlists () youngman ! org ! uk>
Date:       2021-12-19 19:27:58
Message-ID: 25199865-b3a1-cf80-5780-b8e31a13b0a4 () youngman ! org ! uk
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On 19/12/2021 18:46, Roger Heflin wrote:
> You will need to figure out on your distribution where messages get saved.
> 
> On Sun, Dec 19, 2021, 11:52 AM Wols Lists <antlists@youngman.org.uk 
> <mailto:antlists@youngman.org.uk>> wrote:
> 
>     On 15/12/2021 22:05, Roger Heflin wrote:
>      > There would be various messages.
>      >   grep -E 'ATA| sd |ata[0-9]' /var/log/messages
>      > might get you details.  It will also show when the disks are first
>      > showing up and being reported.
> 
>     thewolery /home/anthony # tail /var/log/messages
>     tail: cannot open '/var/log/messages' for reading: No such file or
>     directory
> 
I found it - journalctl. As luck would have it, the system hung, I think 
at 18:35


thewolery /home/anthony # journalctl --since=18:20:00
-- Journal begins at Mon 2021-06-21 14:57:58 BST, ends at Sun 2021-12-19 
19:21:36 GMT. --
Dec 19 18:29:05 thewolery dmeventd[1226]: dmeventd was idle for 3600 
second(s), exiting.
Dec 19 18:29:05 thewolery dmeventd[1226]: dmeventd shutting down.
Dec 19 18:32:55 thewolery plasmashell[1682]: libkcups: 
Create-Printer-Subscriptions last error: 1282 Bad file descriptor
Dec 19 18:32:55 thewolery plasmashell[1682]: libkcups: Request failed 
1282 -1
Dec 19 18:34:53 thewolery kded5[1655]: ktp-kded-module: "auto-away" 
presence change request: "away" ""
Dec 19 18:34:53 thewolery kded5[1655]: ktp-kded-module: plugin queue 
activation: "away" ""
Dec 19 18:34:53 thewolery kscreenlocker_greet[4420]: Qt: Session 
management error: networkIdsList argument is NULL
Dec 19 18:34:54 thewolery kded5[1655]: ktp-kded-module: 
"screen-saver-away" presence change request: "away" ""
Dec 19 18:34:54 thewolery kded5[1655]: ktp-kded-module: plugin queue 
activation: "away" ""
Dec 19 18:34:54 thewolery kscreenlocker_greet[4420]: 
file:///usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/components/UserList.qml:41:9: 
Unable to assign [undefined] to bool
Dec 19 18:34:54 thewolery kscreenlocker_greet[4420]: 
file:///usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/components/UserList.qml:41:9: 
Unable to assign [undefined] to bool
Dec 19 18:40:54 thewolery kded5[1655]: ktp-kded-module: "auto-away" 
state change: TelepathyKDEDModulePlugin::Enabled
Dec 19 18:40:54 thewolery kded5[1655]: ktp-kded-module: plugin queue 
activation: "away" ""
Dec 19 18:40:59 thewolery kwin_x11[1659]: qt.qpa.xcb: QXcbConnection: 
XCB error: 3 (BadWindow), sequence: 39263, resource id: 65011771, major 
code: 18 (ChangeProperty), minor code: 0
Dec 19 18:40:59 thewolery kded5[1655]: ktp-kded-module: 
"screen-saver-away" state change: TelepathyKDEDModulePlugin::Enabled
Dec 19 18:40:59 thewolery kded5[1655]: ktp-kded-module: plugin queue 
activation: "unset" ""

So that looks to me either it's not anything gets logged, or quite 
likely it was so abrupt the system never got a chance to log it ...

So it looks like netconsole is it ...

And today I discovered that the shop that messed up fixing my computer 
has messed up even further - I've lost the cpu cooler fixing bars ... it 
might not be them but it wouldn't surprise me ... :-( so that's another 
one ordered from Amazon ...

Cheers,
Wol
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