Public bug reported: I have a HP 17-cp1147ng notebook from the end of 2022.
The notebook worked "out of the box" with the Kubuntu 22.04 LTS. No black screen there. I've just installed Kubuntu 24.04 LTS on it. I get a black screen after the HP logo on starting up (first time). Only a hard reset would let me do anything with the computer again, no mouse, now keyboard, no picture. I followed this advice (section "Black/purple screen after you boot Ubuntu for the first time"): My computer boots to a black screen, what options do I have to fix it? https://askubuntu.com/questions/162075/my-computer-boots-to-a-black- screen-what-options-do-i-have-to-fix-it It worked (once). So I followed the advice specified there, and went to: "How do I set 'nomodeset' after I've already installed Ubuntu?" https://askubuntu.com/questions/38780/how-do-i-set-nomodeset-after-ive- already-installed-ubuntu Nomodeset works permanently for booting. But after a short "test drive" I think all energy-saving states equally result in a black screen requiring a hard reset (I would have to check that by trying all kind of states [screensaver, sleep-mode etc.) I installed only Kubuntu on the entire hard disc, with no bells and whistles. amdgpu is installed, I checked that: xserver-xorg-video-amdgpu 23.0.0-1build1 Additional hardware information: lspci -v | less: VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Barcelo (rev c2) (prog-if 00 [VGA controller]) DeviceName: AMD Radeon Integrated Graphics Subsystem: Hewlett-Packard Company Barcelo Flags: bus master, fast devsel, latency 0, IRQ 255, IOMMU group 11 Memory at fce0000000 (64-bit, prefetchable) [size=256M] Memory at fcf0000000 (64-bit, prefetchable) [size=2M] I/O ports at 1000 [disabled] [size=256] Memory at d0400000 (32-bit, non-prefetchable) [size=512K] Capabilities: Kernel modules: amdgpu sudo dmidecode -s bios-version: F.03 ** Affects: ubuntu Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2063877 Title: Only black screen on boot with AMD Barcelo GPU without nomodeset To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/2063877/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
