Hi, since online upgrading to Kubuntu 20.10 from 20.04 ( no MS), desktop computer goes to login screen, then at login, a black screen. I tried downloading the ISO > DVD. Live mode was the same, fresh install was the same. It had worked fine for years. Recovery mode seems to work normally, but has compositor and sound failures. ( w Red line thru sound icon), I tried all 3 compositors, Open GL 3.1 or 2.0 compositors sometimes fail, leaving message in the system settings. Sound card won't work about half of boots. Smplayer video doesn't zoom. If I get to the login screen, it's too late, I must press escape shortly after Bios Logo fades, to get to recovery mode.
I have installed all updates.
I tried to disable a bunch of PIM stuff, didn't help.
I found suggestions on the Net, none of which worked so far, including deleting some configuration files and setting up a new user. Hardware detect/boot log files looked painful, eg: keyboard taking too long ( it works, also tried different keyboard, monitor) etc.
I have an SSD Drive for Operating System, spinning HD for data, DVD drive.
I tried different video outputs (HDMI, DVI, no change.)
Sometimes on a black screen, I get a mouse cursor, which will change when moved, to indicate something underneath, which is not visible.
I am not a techie, but have been using Linux for maybe 8 years.
ASUS Z97-A motherboard, with combined Intel CPU/GPU G3258 processor.
KDE Plasma v.
5.19.5
0:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06)
16GB RAM.
Info center say graphics processor is llvmpipe.
Mesa/X.org vendor
Kernel 5.8.0-41-generic
also tried
startx
sudo dpkg-reconfigure sddm
I have installed all updates.
I tried to disable a bunch of PIM stuff, didn't help.
I found suggestions on the Net, none of which worked so far, including deleting some configuration files and setting up a new user. Hardware detect/boot log files looked painful, eg: keyboard taking too long ( it works, also tried different keyboard, monitor) etc.
I have an SSD Drive for Operating System, spinning HD for data, DVD drive.
I tried different video outputs (HDMI, DVI, no change.)
Sometimes on a black screen, I get a mouse cursor, which will change when moved, to indicate something underneath, which is not visible.
I am not a techie, but have been using Linux for maybe 8 years.
ASUS Z97-A motherboard, with combined Intel CPU/GPU G3258 processor.
KDE Plasma v.
5.19.5
0:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06)
16GB RAM.
Info center say graphics processor is llvmpipe.
Mesa/X.org vendor
Kernel 5.8.0-41-generic
also tried
startx
sudo dpkg-reconfigure sddm
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