Should I try this ??
dpkg-reconfigure nvidia-dkms-570
The latest 575’s are available under the PPA. Try to upgrade the driver, enter:
sudo apt install nvidia-driver-575
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Thanks, have just installed it, however no changes unfortunately.
I have been informed on the nvidia developers forum that nvidia only write drivers for their own products. As this is an Intel GPU, I can forget about trying to use nvidia drivers for this.
Doesn’t your laptop have both an Intel as well as an Nvidia GPU?
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It seems only Intel - https://psref.lenovo.com/syspool/Sys/PDF/ThinkPad/ThinkPad_T470s/ThinkPad_T470s_Spec.PDF
lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 620 (rev 02)
It seems “Xrandr” is the tool to finely adjust settings. The answer in this post uses “cvt” to retrieve the info about a TV, and then pass the settings to “Xrandr” - https://askubuntu.com/questions/1266270/cannot-use-full-resolution-of-external-display
The external monitor is a ViewSonic VA903-3 , and although I can’t find a manual for it, the max. resolution is 1280 x 1024 . System settings has it as that exact value ??
cvt 1280 1024
# 1280x1024 59.89 Hz (CVT 1.31M4) hsync: 63.67 kHz; pclk: 109.00 MHz
Modeline "1280x1024_60.00" 109.00 1280 1360 1496 1712 1024 1027 1034 1063 -hsync +vsync
Now to work out what to pass to xrandr. It can be used to crop part of the display - https://superuser.com/questions/1435053/how-to-use-xrandr-to-crop-part-of-my-monitor
Now using a Lenovo T2254pC - Able to view a lot more now, but the RHS of the screen is still truncated. Approximately 20% of the RHS is missing. Is this drivers or some other factor ?
I checked the “Display” BIOS settings. It was set for a Dock situation, so changed it to HDMI. Rebooted, no change at all.
I had always used the System Settings/Display to try to adjust settings, however none of that worked. So, used a function, found on the task bar called “Display Configuration”. . It had 5 options, then selected the one shown at https://imgur.com/a/kubuntu-display-configuration-using-external-monitor-MEWBdOf and I can now see the full screen and task bar. Finally it works.