~/.xsession-errors getting several MB in size.

[GreyGeek]

It seems that all though my display appears to be stable (and beautiful) from my perspective, behind the scenes a lot of error msgs are being thrown. If your .xsession-errors file is getting too large then you can use the following command to empty it out while your system is running:
truncate --size=0 ~/.xsession-errors

Edit:
In the time it took to post the msg above the following data appeared in my ~/.xsession-errors file:

[FONT=monospace][B][COLOR=#000000]:~$ cat ~/.xsession-errors  [/COLOR][/B]
QXcbConnection: XCB error: 3 (BadWindow), sequence: 29153, resource id: 10485764, major code: 18 (ChangeProperty), minor code: 0
kdeinit5: PID 945 terminated.
kscreen: Primary output changed from KScreen::Output(Id: 66 , Name: "LVDS1" ) ( "LVDS1" ) to KScreen::Output(Id: 66 , Name: "LVDS1" ) ( "LVDS1" )
kscreen: Primary output changed from KScreen::Output(Id: 66 , Name: "LVDS1" ) ( "LVDS1" ) to KScreen::Output(Id: 66 , Name: "LVDS1" ) ( "LVDS1" )
kscreen: Primary output changed from KScreen::Output(Id: 66 , Name: "LVDS1" ) ( "LVDS1" ) to KScreen::Output(Id: 66 , Name: "LVDS1" ) ( "LVDS1" )
kscreen.kded: Change detected
kscreen: Primary output changed from KScreen::Output(Id: 66 , Name: "LVDS1" ) ( "LVDS1" ) to KScreen::Output(Id: 66 , Name: "LVDS1" ) ( "LVDS1" )
kscreen.kded: Saving current config to file
kscreen.kded: Calculating config ID for KScreen::Config(0x24c3cc0)
kscreen.kded:   Part of the Id:  "9ce38cadbf9f336b0d06506d64149425"
kscreen.kded:   Config ID: "c26c5a913c0bc317657fa4c99f87a8ae"
kscreen.kded: Config saved on:  "/home/jerry/.local/share/kscreen/c26c5a913c0bc317657fa4c99f87a8ae"
networkmanager-qt: void NetworkManager::AccessPointPrivate::propertiesChanged(const QVariantMap&) Unhandled property "LastSeen"
networkmanager-qt: void NetworkManager::AccessPointPrivate::propertiesChanged(const QVariantMap&) Unhandled property "LastSeen"
.... snip about 50 repeats of this error ......
networkmanager-qt: void NetworkManager::AccessPointPrivate::propertiesChanged(const QVariantMap&) Unhandled property "LastSeen"
networkmanager-qt: void NetworkManager::AccessPointPrivate::propertiesChanged(const QVariantMap&) Unhandled property "LastSeen"
QXcbConnection: XCB error: 3 (BadWindow), sequence: 47489, resource id: 111149057, major code: 15 (QueryTree), minor code: 0
kdeinit5: PID 626 terminated.
kscreen: Primary output changed from KScreen::Output(Id: 66 , Name: "LVDS1" ) ( "LVDS1" ) to KScreen::Output(Id: 66 , Name: "LVDS1" ) ( "LVDS1" )
kscreen: Primary output changed from KScreen::Output(Id: 66 , Name: "LVDS1" ) ( "LVDS1" ) to KScreen::Output(Id: 66 , Name: "LVDS1" ) ( "LVDS1" )
kscreen: Primary output changed from KScreen::Output(Id: 66 , Name: "LVDS1" ) ( "LVDS1" ) to KScreen::Output(Id: 66 , Name: "LVDS1" ) ( "LVDS1" )
kscreen.kded: Change detected
kscreen: Primary output changed from KScreen::Output(Id: 66 , Name: "LVDS1" ) ( "LVDS1" ) to KScreen::Output(Id: 66 , Name: "LVDS1" ) ( "LVDS1" )
kscreen.kded: Saving current config to file
kscreen.kded: Calculating config ID for KScreen::Config(0x24c3cc0)
kscreen.kded:   Part of the Id:  "9ce38cadbf9f336b0d06506d64149425"
kscreen.kded:   Config ID: "c26c5a913c0bc317657fa4c99f87a8ae"
kscreen.kded: Config saved on:  "/home/jerry/.local/share/kscreen/c26c5a913c0bc317657fa4c99f87a8ae"
QXcbConnection: XCB error: 2 (BadValue), sequence: 38634, resource id: 29360132, major code: 142 (Unknown), minor code: 3
[B]jerry@jerry-Aspire-7739:~$[/B] 
[/FONT]

[elijathegold]

I get a constant stream of

networkmanager-qt: void NetworkManager::AccessPointPrivate::propertiesChanged(const QVariantMap&) Unhandled property "LastSeen"

so I've added your truncate command to a cron job that runs every couple of hours.

It's very useful until the bug gets fixed. Thanks.

[MoonRise]

I actually have a bunch of redraw errors, sensors: not found, and QPixmap::scaled: Pixmap is a null pixmap. I'll clear that and see what it looks like at the end of the day.

[joneall]

Hey, I'm amazed! It's usually Graygeek who replies to my problems.

I have the same problem.

org.kde.KScreen[1442]: kscreen: Primary output changed from KScreen::Output(Id: 175 , Name: "HDMI-3" ) ( "HDMI-3" ) to KScreen::Output(Id: 175 , Name: "HDMI-3" ) ( "HDMI-3" )

After a number of these, the system hangs.

[GreyGeek]

Hey, I'm amazed! It's usually Graygeek who replies to my problems.

I have the same problem.

org.kde.KScreen[1442]: kscreen: Primary output changed from KScreen::Output(Id: 175 , Name: "HDMI-3" ) ( "HDMI-3" ) to KScreen::Output(Id: 175 , Name: "HDMI-3" ) ( "HDMI-3" )

After a number of these, the system hangs.

Here is a bug report about kscreen, which is the "smart" hotplug for plugging monitors in and out. Also, kscreen dual monitor configurations apparently do not survive a reboot.

It's been reported that something as simple as deleting the kscreen directory, ~/.kde/share/apps/kscreen, fixes hot plugging problem.