> Hello Hobie, > > On 2022-04-20 12:13 UTC+0200, hobie of RMN wrote: >> Hi, Folks - > >> With buster, I had done some tweaking to the boot command line in order to >> have a certain font size come up in the plain text console windows. Should I suspect that's still present in grub and is for some reason problematic under bullseye? Any tips, hints, suggestions, wild-eyed speculations would be appreciated. :) > Wild-eyed speculation: The tweaks are probably still present in > /etc/default/grub. Remove them to see if the problems are related.
thanks, Christian and Greg. :) Here's the 'tweak' that has worked well for years, before this upgrade - I'll break it into a few lines but it's all one line in /etc/default/grub: GRUB_CMDLINE_LINUX= "video=640x400. consoleblank=600 reboot=pci radeon.cik_support=0 amdgpu.cik_support=1" Changing video=640x400 to video=640x480 overcomes the "Input not support" error problem but makes the characters smaller and leaves some screen real estate unused -- which is exactly why video=60x400 is what I had eventually added to the command line in the first place. :( Hardware has remained the same. What does anyone think has changed in the upgrade to produce this odd problem? Is there a DVI module or driver that would be a likely suspect?
