#530 ASUS KFSN4-DRE, Undefined video mode number: 314

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opened 1 month ago by eskere · 7 comments
eskere commented 1 month ago

I have a problem booting an ASUS KFSN4-DRE. After having flashed it with libreboot (I have tested both text mode and vesafb ROMs), the video output became jittery and unusable. I'm trying to install a distro (Debian), but after the grub menu I get the error 'Undefined video mode number: 314' and I'm asked to insert a video mode, I have tried them all but none works.

Also I have tried to boot my distro image again with the original BIOS and it does work.

An option would be booting with the original bios, setting up an SSH server and then installing libreboot, but isn't there any solution for this?

I have a problem booting an ASUS KFSN4-DRE. After having flashed it with libreboot (I have tested both text mode and vesafb ROMs), the video output became jittery and unusable. I'm trying to install a distro (Debian), but after the grub menu I get the error 'Undefined video mode number: 314' and I'm asked to insert a video mode, I have tried them all but none works. Also I have tried to boot my distro image again with the original BIOS and it does work. An option would be booting with the original bios, setting up an SSH server and then installing libreboot, but isn't there any solution for this?
Andrew Robbins commented 1 month ago
Collaborator

Just to be clear, you're saying that the video output is jittery and garbaged like in the images you've provided with both the text mode and vesafb ROMs?

Just to be clear, you're saying that the video output is jittery and garbaged like in the images you've provided with *both* the text mode and vesafb ROMs?
eskere commented 1 month ago
Poster

Yes

Yes
Andrew Robbins commented 1 month ago
Collaborator

Once we are ready to test new images for all supported boards, please do so, so that we can ascertain whether this issue is still present on the text mode and corebootfb ROMs. In the meantime we'll leave this issue open.

Once we are ready to test new images for all supported boards, please do so, so that we can ascertain whether this issue is still present on the text mode and corebootfb ROMs. In the meantime we'll leave this issue open.
eskere commented 1 month ago
Poster

@and_who I have tested the precompiled binaries of both Text and Vesafb mode And the output is the same as you can see, identical.

I'll try compiling my own binaries and test it again, also with coreboot. I'll let you know.

@and_who I have tested the precompiled binaries of both Text and Vesafb mode And the output is the same as you can see, identical. I'll try compiling my own binaries and test it again, also with coreboot. I'll let you know.
eskere commented 1 week ago
Poster

Update:

CPUs The Hexa-Core Opterons don't work on this board (tested 2435, 2431 and 8384 which doesn't even boot), it may seem working, the system boots etc. but it crashes, crashes often and 'randomly', just by running a simple 'sudo apt-get update' or 'sudo cp xxx yyy', I've figured out the problem with the coreboot community. This problem occurs only when running an unsupported CPU, everything works fine with 22xx processors.

BIOS ROMs I have the binaries on the libreboot website with all the processors listed above: the system boots but the video it's unreadable. Then I have tried to build libreboot images from the git but it's too ..buggy? Probably I'm running a newer version of gcc, however I was not able to build the images. So I built coreboot images for this board with the option NO_BLOBS, 'do not include microcode updates'. As the coreboot community said, it should be free from proprietary softwares. I'll attach it here.

Also the coreboot community said that often the mircocode updates are critical for the system as they patch security vulnerabilities, so my question is, how is safe is it? No one seems to support this board anymore. :(

Update: CPUs The Hexa-Core Opterons don't work on this board (tested 2435, 2431 and 8384 which doesn't even boot), it may seem working, the system boots etc. but it crashes, crashes often and 'randomly', just by running a simple 'sudo apt-get update' or 'sudo cp xxx yyy', I've figured out the problem with the coreboot community. This problem occurs only when running an unsupported CPU, everything works fine with 22xx processors. BIOS ROMs I have the binaries on the libreboot website with all the processors listed above: the system boots but the video it's unreadable. Then I have tried to build libreboot images from the git but it's too ..buggy? Probably I'm running a newer version of gcc, however I was not able to build the images. So I built coreboot images for this board with the option NO_BLOBS, 'do not include microcode updates'. As the coreboot community said, it should be free from proprietary softwares. I'll attach it here. Also the coreboot community said that often the mircocode updates are critical for the system as they patch security vulnerabilities, so my question is, how is safe is it? No one seems to support this board anymore. :(
eskere commented 1 week ago
Poster
Here is the ROM I built https://notabug.org/eskere/kfsn4-dre_coreboot_rom
eskere commented 1 week ago
Poster

Note: even minifree.org don't offer libreboot installation for this board.

Note: even minifree.org don't offer libreboot installation for this board.
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