I am trying to run Kubuntu 26.04 LTS on an HP EliteBook 8770w and I am having GPU driver issues.
Laptop: HP EliteBook 8770w CPU: Intel Core i5-3380M GPU: AMD FirePro M4000 PCI ID: 1002:682d BIOS Version: F.43 SSD: Samsung 840 SSD Kubuntu Version Kubuntu 26.04 LTS Kernel: 7.0.0-22-generic Plasma 6 Problem
The system only boots successfully when using: quiet splash nomodeset
Without nomodeset:
Kubuntu logo appears Screen turns black System never reaches the desktop Current Status
With nomodeset: glxinfo -B
returns: OpenGL renderer string: llvmpipe (LLVM 21.1.8, 256 bits)
and: inxi -Gxx shows:
Device: AMD/ATI Chelsea XT GL [FirePro M4000] driver: N/A renderer: llvmpipe
So the system is running entirely in software rendering.
Driver Tests amdgpu
Kernel log: amdgpu 0000:01:00.0: probe with driver amdgpu failed with error -22 radeon
I tried: sudo modprobe -r amdgpu sudo modprobe radeon
Result: modprobe: ERROR: could not insert 'radeon': Invalid argument
No useful radeon-related messages appear in dmesg.
Firmware Firmware appears to be installed: apt search linux-firmware-amd
shows: linux-firmware-amd-graphics installed
Tahiti firmware files exist: ls /lib/firmware/radeon | grep -i tahiti
returns: TAHITI_ce.bin.zst TAHITI_mc.bin.zst TAHITI_me.bin.zst TAHITI_pfp.bin.zst TAHITI_rlc.bin.zst TAHITI_smc.bin.zst ... GRUB Tests Tried:
quiet splash radeon.si_support=1 amdgpu.si_support=0
Result: Kubuntu logo appears Screen goes black No desktop
Tried: quiet splash nomodeset radeon.si_support=1 amdgpu.si_support=0
Result: System boots llvmpipe only Additional Information lspci -vnn -s 01:00.0
shows: 01:00.0 VGA compatible controller [0300]: AMD/ATI Chelsea XT GL [FirePro M4000] [1002:682d] Kernel modules: radeon, amdgpu
but there is no: Kernel driver in use: entry.
Questions
- Has anyone successfully used a FirePro M4000 (PCI ID 1002:682d) with Kubuntu/Ubuntu 26.04 and Kernel 7.0?
- Should this GPU use the radeon driver or amdgpu?
- Is this a known regression with Southern Islands / GCN 1.0 GPUs?
- Are there additional kernel parameters required for Tahiti/GCN1 on Kernel 7.0?
- Would booting an older 6.x kernel be recommended?
Any help would be appreciated.