Framebuffer problems on real Intel NUC (NUC7i7DNHE) hardware

[lonnietc]

Hello,

I have been able to compile and run an x86_64 version (hello.iso) of L4Re on real hardware "Intel NUC (NUC7i7DNHE)" for which it ran just fine, but had problems running any L4Re pc ISO that used framebuffer with the resulting error that scrolls indefinitely needing a hard reboot:

fb-drv C00:67bb in 1808 -> 0 Ignored

Not really sure what that means but there is definitely a difference between the Qemu environment which will boot the framebuffer ISO's and my Intel NUC environment which seems to be in the display driver.

Any ideas on how I might be able to proceed in order to get it to work?

Thanks in advance and have a good day

[alacko]

Hi,
seems to be an issue with the internal graphics and/or VESA mode. Would need to check with the hardware. I might have a similar system soon to check.
One option here is to change which component in the boot-up is enabling the VESA (framebuffer mode). We (L4Re) can do it, but also GRUB can already do it. There are GRUB commands to enable VESA mode already which would L4Re then just use, and the error could be avoided.

[lonnietc]

Hello,

I was looking to see if something could be done via Grub on some existing x86_64 (AMD64) ISO's created:

https://l4re.org/download/snapshots/pre-built-images/amd64/

but no luck so far and I will test them on some other hardware today as well.

Ultimately, the goal is to get the frambuffer ISO's to boot and then follow the L4Re build on your wiki

https://github.com/kernkonzept/manifest/wiki/MultipleVMs

to get a few LinuxVM's and some framebuffer examples to boot via the CON's multiplexer as well as an initial test.
Thanks

[lonnietc]

Hello All,

I tried various GRUB commands and had no luck with the framebuffer.

Is this something that Kernkonzept is looking into or maybe will consider looking into soon since on my x86_64 platform test machines I cannot run any demo that uses framebuffer so far and trying to follow the Kernkonzept WIKI (https://github.com/kernkonzept/manifest/wiki) to try and build for my platforms does not work as well.

Any help would be truly appreciated.
Thanks