Blackscreen on Kubuntu after installation

Asked Aug 28 '19 at 21:31

Active Aug 28 '19 at 21:31

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I installed Kubuntu for that I enabled integrated graphics.

Then I set the initial display output to pci 1 output and disabled the ingrated grahics. Then I put the hdmi cable in the graphics card (amd r9 390) and boot. I just get a blackscreen with a not blinking underline. Pressing alt ctrl f1 does nothing but when i turn of the pc i see the kubuntu logo while the computer is turning of. Then i switchd back to integrated graphics but over that i m now getting a blackscreen with a blinking cursor and i can access the console there. I noticed that my gpu is a sea island one. I tried

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash radeon.modeset=1"

And

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash radeon.si_support=0 amdgpu.si_support=1"

But it is not working.

asked Aug 28 '19 at 21:31

juliushuck

Ok, I will try but I think the installer screen was black with the hdmi plugged in the graphics card – juliushuck Aug 28 '19 at 21:55
See: My computer boots to a black screen during installation. If this is new hardware, make sure it's connected properly and check for possible damage. Many dedicated GPUs also require additional power from the power supply. – Nmath Aug 28 '19 at 21:59
No it is not new and I manged to run ubuntu and manjaro on it earlier this year – juliushuck Aug 28 '19 at 22:00
Is there a nomodeset in the grub line you boot with? – K7AAY Aug 28 '19 at 22:34

Blackscreen on Kubuntu after installation

0 Answers0