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Hi everyone,
My issue is resolved, but I wanted to report it here because it is related to some package upgrades I had today, and one from 9/10/2026.
The issue I was experiencing was that when I would try to boot, after getting to the LUKS password, it would go black screen before loading PLM and prompting for my login password. It was hard frozen. I couldn't even get a TTY with Ctrl+Alt+F2/3/4.
After various troubleshooting, I was able to determine the issues were with the following packages:
libldap 2.7.1-1
linux-firmware-amdgpu-20260910-1
My system has a Ryzen 9 7900X and a Radeon 7900XTX.
The solution was to downgrade both packages and lib32-libldap to the previous versions. This solved the display probe issues and I was able to successfully complete the boot process from GRUB to Plasma.
Which leads me to my next issue.
This relates to corrupted GPG keys.
The problem package:
libgcrypt 1.12.4-1
When booting into Plasma I am greeted with a message of "gpg: keydb_search_first failed: Invalid argument"
gpg --list-keys returns the same error.
The solution was to again downgrade libgcrypt to 1.12.3-1 and then I had to delete my ~/.gnupg directory and regenerate.
I had my gpg keys backed up so I was able to import them after the downgrade and regeneration.
EDIT: I forgot to mention I am using gpg with keyboxd. So it may be an issue between the libgcrypt 1.12.4-1 package and keyboxd.
I just wanted to share this as I am sure others may experience a similar issue.
Last edited by drucifer (2026-09-13 18:50:40)
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Similar issue here. Upgraded to linux-firmware-amdgpu-20260910-1 and had the same black screen issue during initrd right after LUKS prompt.
My system is AMD Ryzen 7 6850U with integrated graphics.
Steps to fix the issue:
- Reboot and press 'e' on grub to edit
- Add `nomodeset` kernel parameter at the 'linux' line
- Boot into arch
- Downgrade linux-firmware-amdgpu to anything before 20260910. I downgraded to 20260810-2 and had no issues booting afterward
- Reboot
However I experienced major screen tearing and lag. To fix it, I downgraded the following packages:
- linux-firmware (except linux-firmware-other. This had conflicting files with other linux-firmware packages so I kept it as is)
- mesa
- vulkan-radeon
- amd-ucode
Not sure if amd-ucode was necessary. But after this all lag was gone and my system was back to normal.
Hopefully this helps someone else.
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UPDATE
This morning when I went to boot the errors started occurring again. Black screen at boot or frozen Plasma desktop.
I had to add amdgpu.ignore_irq_gfx=1 to GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub
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5600 with 7700xt here - up-to-date - no issues here (neither graphic nor gpg)
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5600 with 7700xt here - up-to-date - no issues here (neither graphic nor gpg)
The issue seems to stem from Raphael and Navi 31 (RDNA3) hitting snags with IRQ from what I have been able to deduce.
My original troubleshooting from yesterday addressed Navi 31, today addressed IRQ.
Last edited by drucifer (2026-09-13 15:29:51)
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Ok last update.
I suspect libldap was a red herring. I updated it and it was fine.
I just updated to 20260910-2 on the gpu firmware and those issues stopped.
Libgcrypt was likely also a red-herring and the corruption may have been a result of the other boot errors related to the gpu problems because I just reupdated that to 1.12.4-1 and the keys were not corrupted.
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