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Re: After some effort, can't change grub screen resolution

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Lance Simmons composed on 2018-06-29 00:49 (UTC-0500):

> (1) "vbeinfo" and "videoinfo" return no result in grub.  The screen blanks
> and eventually I restart the computer.

Neither work at my current Grub2-efi prompt on Kaby Lake. From videoinfo, I do
get a two line output:

	List of supported video modes:
	Legend: mask/position=red/gree/blue/reserved
...
> (3) running

> lspci  -v -s  $(lspci | grep ' VGA ' | cut -d" " -f 1)

Give inxi -G -c0 a try.

> Any suggestions?

If you've only ever used UEFI boot mode on that Asrock, try booting a USB stick
or HD with Grub2 installed in CSM (non-UEFI/GPT) mode to see if either command
returns anything. Neither vbeinfo nor videoinfo has _ever_ worked for me. I
suspect those commands are not compatible with one of either various UEFI BIOS,
or all UEFI BIOS.

Ask on the help-grub or Grub-devel mailing lists if you can't get a Google
answer that lines up with my suspicion. and nothing useful turns up here. I only
use Grub2 on UEFI systems with GPT, always Grub Legacy with MBR disks.
-- 
"Wisdom is supreme; therefore get wisdom. Whatever else you
get, get wisdom." Proverbs 4:7 (New Living Translation)

 Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata  ***  http://fm.no-ip.com/

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Thread

After some effort, can't change grub screen resolution Lance Simmons <simmons.lance@gmail.com> - 2018-06-29 08:00 +0200
  Re: After some effort, can't change grub screen resolution Michael Lange <klappnase@freenet.de> - 2018-06-29 10:10 +0200
  Re: After some effort, can't change grub screen resolution Felix Miata <mrmazda@earthlink.net> - 2018-06-29 11:30 +0200
  Re: After some effort, can't change grub screen resolution Darac Marjal <mailinglist@darac.org.uk> - 2018-06-29 11:40 +0200
    Re: After some effort, can't change grub screen resolution Lance Simmons <simmons.lance@gmail.com> - 2018-06-29 18:20 +0200

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