>> 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?
(sigh) As mentioned, the video=640x400 appears to have caused my initial problem, and changing it to video=640x480 took care of that - but it's left me squinting at my console screens because of the smaller font, and I'd love to find the way to restore the slightly larger font. However, I surrender, glad to have fixed the main initial problem. :)