Re: stretch uefi install ends up with no framebuffer for console
On Fri, 17 Jul 2020 16:45:33 +0000
rbraun204 <rbraun204@gmail.com> wrote:
> Hey all, i'm installing stretch onto a HP Z4G4 workstation via
> netboot and in uefi mode. The only video hardware in the box is a
> NVIDIA Corporation GP107GL [Quadro P620]. The install goes as
> expected. Only installed standard utils and ssh server.
>
> On first boot grub comes up and boots into the default entry, the
> only text after on the screen is the loading linux/initrd echo entries
> from grub. Thought it was frozen, but noticed my dhcp service got a
> req from the box and sure enough i can ssh in and the machine is up
> and running, just no output to the monitor. Still just the grub
> statements up on the screen.
>
> running hwinfo --framebuffer results in no output.
>
> efifb appears to get loaded and has grubs resolution
> [ 1.451694] efifb: probing for efifb
> [ 1.451712] efifb: framebuffer at 0xe0000000, using 8640k, total 8640k
> [ 1.451712] efifb: mode is 1920x1080x32, linelength=8192, pages=1
> [ 1.451713] efifb: scrolling: redraw
> [ 1.451713] efifb: Truecolor: size=8:8:8:8, shift=24:16:8:0
> [ 1.484650] fb0: EFI VGA frame buffer device
>
>
> installed the latest kernel from stretch-backports, reboot. Same
> behavior as above.
>
> Installed nvidia-driver (proper for this gpu), reboot. Same behavior as above.
>
> Upgraded to nvidia-driver from backports, reboot. Same behavior as above.
>
> Install some desktop environment, reboot. system boots into X no
> issues. Try a ctrl-alt-f1 to drop to console and monitor shuts off
> reporting no video output. ctrl-alt-f7 brings video and monitor back
> online.
>
> Moved on to trying to massage /etc/default/grub and setting
> GRUB_GFXMODE and GRUB_GFXPAYLOAD_LINUX. And can make grub look pretty
> at 1920x1080 or any resolution if I want. It appears grub is passing
> the video resolution properly to the kernel as I can see in dmesg when
> efifb is loaded the resolution it's looking to set is the value of
> GRUB_GFXMODE. For shits and giggles tried setting gfxmode to 1024x768
> and still no dice.
>
> Tried booting into the grub commandline to verify video modes. Sure
> enough grub reports efi GOP driver and 1920x1080x32 as a valid mode.
>
> Anyone have any ideas?
>
> Thanks
>
> Ryan
>
Hi Ryan,
Check if your video card needs a firmware. Also check if it needs a
kernel module.
Regards,
Marko
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