New question #705676 on Ubuntu-Certification:
https://answers.launchpad.net/ubuntu-certification/+question/705676
Hi, I just bought a HP EliteBook 830 G9 and installed Ubuntu, which I really
would like to use. During the installation of Ubuntu (22.10 and 22.04 LTS),
everything is fine, but as soon as it reboots after installing, when I move the
cursor into the (say) 30% lower-most part of my screen, the screen freezes and
shows graphical errors (like vertical lines and such), and is very slow in
general, even while the rest of the screen is fine.
When e.g. watching videos, the entire screen is fine unless I move my cursor to
the lowermost part of the screen. Then the refreshing frequency is very low and
I have tried to update, reinstall drivers, and also used an alternative open
source driver (Mesa), but that doesn't solve the problem.
The only thing that solves the problem is.. lowering the resolution, which is
something I do not want to do, and should not have to, as the specifications
say the resolution should be 1900x1200. Changing the refreshment frequency
however does not solve the problem.
The output of lshw -c video is this:
*-display
description: VGA compatible controller
product: Alder Lake-UP3 GT2 [Iris Xe Graphics]
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
logical name: /dev/fb0
version: 0c
width: 64 bits
clock: 33MHz
capabilities: pciexpress msi pm vga_controller bus_master cap_list rom fb
configuration: depth=32 driver=i915 latency=0 mode=1920x1200
resolution=1920,1200 visual=truecolor xres=1920 yres=1200
resources: iomemory:600-5ff iomemory:400-3ff irq:207
memory:603c000000-603cffffff memory:4000000000-400fffffff ioport:3000(size=64)
memory:c0000-dffff memory:4010000000-4016ffffff memory:4020000000-40ffffffff
Do you have any idea how to solve this problem and whether it is at all related
to the graphics card / driver, as I seem to think?
Best regards and thank you for your efforts.
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