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strugart

Member

From: argentina

Registered: 2013-10-03

Posts: 10

Website

video screen problems [SOLVED]

Hi. I will start from the beginning. my monitor broke and I lost access to my arch system. When I got the money was 2 months later. I have of course at this point a fairly large number of updates. I did the upgrade, but before I checked the main page for any alarms, there were none for my system. After the update grub pointed to and old version of the kernel, I booted in chroot and I fixed that one (I must point out that trying to fix it i jumped to testing and I am using the last kernel).
Now, Grub  and systemd is booting but at the point that the login manager should start I lost video connection. I tough that it was a X/wayland thing and I switch back to console. Nop. I play with the bios, thinking video may need to stuff. Nope.
I checked the logs and systemd continues to load, and even claims success, so I think is an output problem.
I will try reverting back the kernel, but because with that is  everything I know to try, I wanted to ask if anyone saw this problem or has any new ideas.

Thanks!

Last edited by strugart (2018-04-19 15:00:36)

mrunion

Member

From: Jonesborough, TN

Registered: 2007-01-26

Posts: 1,938

Website

Re: video screen problems [SOLVED]

Search the forums. As I recall there were some changes recently that affected video output if you are using HDMI or something similar. Again, search the forums and see what you find.

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Matt

"It is very difficult to educate the educated."

strugart

Member

From: argentina

Registered: 2013-10-03

Posts: 10

Website

Re: video screen problems [SOLVED]

I don't use HDMI. my connection is an old  and trusty VGA. And my GPU is AMD.
And downgrading the kernel did not help, which is kinda strange.

Trilby

Inspector Parrot

Registered: 2011-11-29

Posts: 29,525

Website

Re: video screen problems [SOLVED]

Append nomodeset to the kernel line and see if you can boot to a tty.

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"UNIX is simple and coherent..." - Dennis Ritchie, "GNU's Not UNIX" -  Richard Stallman

strugart

Member

From: argentina

Registered: 2013-10-03

Posts: 10

Website

Re: video screen problems [SOLVED]

Append nomodeset to the kernel line and see if you can boot to a tty.

yep. it work. how I should debug/fix this?
I can only think of reverting back to the radeon module instead of the newer one. But maybe is a upstream issue.

Thanks!

seth

Member

Registered: 2012-09-03

Posts: 51,185

Re: video screen problems [SOLVED]

And my GPU is AMD

Which in particular and do you use amdgpu?

In case, try "amdgpu.dc=0" as kernel parameter.

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strugart

Member

From: argentina

Registered: 2013-10-03

Posts: 10

Website

Re: video screen problems [SOLVED]

And my GPU is AMD

Which in particular and do you use amdgpu?

In case, try "amdgpu.dc=0" as kernel parameter.

yep. amdgpu.dc was set to 1, which worked before but with the update stopped working. is solved now.