Sometimes, when I restore a minimised window it will be entirely rendered as multi-colored static, until I minimise and restore the window again.
This seems to happen most reliably with my VPN app, but I've also seen it happen with everything from Firefox to VLC and GIMP. When it happens with Anki it sometimes only happens partially, which I don't think I've seen for any other program. Here is a screenshot of the pattern:
As it's easy enough to clear up the static this doesn't impact me particularly, but does it suggest that my GPU may be failing? I'm using a NVIDIA GeForce GTX 460 which has been trucking along for about a decade now, but other than this I haven't seen any graphical issues.
I am using the ‘NVIDIA driver metapackage from nvidia-driver-390’ and this has occurred across at least Ubuntu 21.10 and 20.04, possibly earlier.
Edit 2022-02-22
Additional Drivers window:
dpkg -l *nvidia*:
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-=============================-==================-============-=========================================================
un libgldispatch0-nvidia <none> <none> (no description available)
ii libnvidia-cfg1-390:amd64 390.144-0ubuntu2 amd64 NVIDIA binary OpenGL/GLX configuration library
un libnvidia-cfg1-any <none> <none> (no description available)
un libnvidia-common <none> <none> (no description available)
ii libnvidia-common-390 390.144-0ubuntu2 all Shared files used by the NVIDIA libraries
un libnvidia-compute <none> <none> (no description available)
ii libnvidia-compute-390:amd64 390.144-0ubuntu2 amd64 NVIDIA libcompute package
ii libnvidia-compute-390:i386 390.144-0ubuntu2 i386 NVIDIA libcompute package
un libnvidia-decode <none> <none> (no description available)
ii libnvidia-decode-390:amd64 390.144-0ubuntu2 amd64 NVIDIA Video Decoding runtime libraries
ii libnvidia-decode-390:i386 390.144-0ubuntu2 i386 NVIDIA Video Decoding runtime libraries
un libnvidia-encode <none> <none> (no description available)
ii libnvidia-encode-390:amd64 390.144-0ubuntu2 amd64 NVENC Video Encoding runtime library
ii libnvidia-encode-390:i386 390.144-0ubuntu2 i386 NVENC Video Encoding runtime library
un libnvidia-fbc1 <none> <none> (no description available)
ii libnvidia-fbc1-390:amd64 390.144-0ubuntu2 amd64 NVIDIA OpenGL-based Framebuffer Capture runtime library
ii libnvidia-fbc1-390:i386 390.144-0ubuntu2 i386 NVIDIA OpenGL-based Framebuffer Capture runtime library
un libnvidia-gl <none> <none> (no description available)
ii libnvidia-gl-390:amd64 390.144-0ubuntu2 amd64 NVIDIA OpenGL/GLX/EGL/GLES GLVND libraries and Vulkan ICD
ii libnvidia-gl-390:i386 390.144-0ubuntu2 i386 NVIDIA OpenGL/GLX/EGL/GLES GLVND libraries and Vulkan ICD
un libnvidia-gl-460 <none> <none> (no description available)
un libnvidia-gl-465 <none> <none> (no description available)
un libnvidia-ifr1 <none> <none> (no description available)
ii libnvidia-ifr1-390:amd64 390.144-0ubuntu2 amd64 NVIDIA OpenGL-based Inband Frame Readback runtime library
ii libnvidia-ifr1-390:i386 390.144-0ubuntu2 i386 NVIDIA OpenGL-based Inband Frame Readback runtime library
un libnvidia-ml1 <none> <none> (no description available)
un nvidia-384 <none> <none> (no description available)
un nvidia-390 <none> <none> (no description available)
un nvidia-common <none> <none> (no description available)
un nvidia-compute-utils <none> <none> (no description available)
ii nvidia-compute-utils-390 390.144-0ubuntu2 amd64 NVIDIA compute utilities
ii nvidia-dkms-390 390.144-0ubuntu2 amd64 NVIDIA DKMS package
un nvidia-dkms-kernel <none> <none> (no description available)
ii nvidia-driver-390 390.144-0ubuntu2 amd64 NVIDIA driver metapackage
un nvidia-driver-binary <none> <none> (no description available)
un nvidia-kernel-common <none> <none> (no description available)
ii nvidia-kernel-common-390 390.144-0ubuntu2 amd64 Shared files used with the kernel module
un nvidia-kernel-source <none> <none> (no description available)
ii nvidia-kernel-source-390 390.144-0ubuntu2 amd64 NVIDIA kernel source package
un nvidia-libopencl1-dev <none> <none> (no description available)
un nvidia-opencl-icd <none> <none> (no description available)
un nvidia-persistenced <none> <none> (no description available)
ii nvidia-prime 0.8.17.1 all Tools to enable NVIDIA's Prime
ii nvidia-settings 470.57.01-0ubuntu3 amd64 Tool for configuring the NVIDIA graphics driver
un nvidia-settings-binary <none> <none> (no description available)
un nvidia-smi <none> <none> (no description available)
un nvidia-utils <none> <none> (no description available)
ii nvidia-utils-390 390.144-0ubuntu2 amd64 NVIDIA driver support binaries
ii xserver-xorg-video-nvidia-390 390.144-0ubuntu2 amd64 NVIDIA binary Xorg driver
dkms status:
nvidia, 390.144, 5.13.0-28-generic, x86_64: installed
nvidia, 390.144, 5.13.0-30-generic, x86_64: installed
virtualbox, 6.1.26, 5.13.0-28-generic, x86_64: installed
virtualbox, 6.1.26, 5.13.0-30-generic, x86_64: installed
