Re: Debugging system hangs

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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@xxxxxxxxxxxxxxx <mailto:antlists@xxxxxxxxxxxxxxx>> 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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