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/