Arch Linux

EgidioCaprino

Member

Registered: 2016-03-13

Posts: 108

[SOLVED] Display or CPUs issue

Hello,

I have an old laptop that I use as a home server. It has no desktop environment installed. The laptop has its battery removed.

When I boot the Linux kernel without the acpi=off kernel option, it does not show the login prompt. The screen turns and stays black. But in this case, the system correctly recognizes 4 CPUs.

When instead I run it with the acpi=off kernel option, the system recognizes only 1 CPU, but I have no problem with the display, which correctly shows the login prompt.

This is the journalctl log: https://pastebin.com/rhwmsNs0

Does anyone have any idea of what is happening?

Thank you

Last edited by EgidioCaprino (Today 07:53:49)

jonno2002

Member

Registered: 2016-11-21

Posts: 895

Re: [SOLVED] Display or CPUs issue

Sep 03 23:31:28 archlinux kernel: amdgpu 0000:00:01.0: [drm] Found UVD firmware Version: 1.64 Family ID: 9
Sep 03 23:31:28 archlinux kernel: amdgpu 0000:00:01.0: [drm] Display Core v3.2.384 initialized on DCE 8.3
Sep 03 23:31:28 archlinux kernel: workqueue: name exceeds WQ_NAME_LEN. Truncating to: hdmi_frl_status_polling_workque
Sep 03 23:31:28 archlinux kernel: amdgpu 0000:00:01.0: [drm] *ERROR* Failed to register hpd irq!
Sep 03 23:31:28 archlinux kernel: amdgpu 0000:00:01.0: [drm] *ERROR* DM: Failed to initialize IRQ
Sep 03 23:31:28 archlinux kernel: amdgpu 0000:00:01.0: [drm] *ERROR* failed to initialize sw for display support.
Sep 03 23:31:28 archlinux kernel: amdgpu 0000:00:01.0: hw_init of IP block <dm> failed -22
Sep 03 23:31:28 archlinux kernel: amdgpu 0000:00:01.0: amdgpu_device_ip_init failed
Sep 03 23:31:28 archlinux kernel: amdgpu 0000:00:01.0: Fatal error during GPU init

see this thread: https://bbs.archlinux.org/viewtopic.php?id=314176

EgidioCaprino

Member

Registered: 2016-03-13

Posts: 108

Re: [SOLVED] Display or CPUs issue

radeon.si_support=1 amdgpu.si_support=0 radeon.cik_support=1 amdgpu.cik_support=0

This fixed it for me, thank you