Confirming the fix on a fourth OEM/model: Lenovo ThinkPad E16 Gen 2
(Ryzen 7 7735HS, Radeon 680M, 1002:1681 rev 0a), Fedora 43 KDE, kernel
7.2.5-100.fc43. With linux-firmware-20260916-1.fc43 the DMUB loads
("DMUB hardware initialized: version=0x0400004C"), zero DMCUB errors,
and both external displays over USB-C DP Alt Mode are detected again.
The shipped yellow_carp_dmcub.bin is byte-identical (sha256
4bcb91d58ba727684845b02a9cdd32f37cb5a9f71bd4b93d4e678094465cda47) to the
one from 20260810-1.Re comment #21: on my system the fix only takes effect after the initramfs is regenerated (sudo dracut -f --regenerate-all) and a reboot - the package upgrade alone left the old blob in the initrd of the running kernel. Re comment #23: yes, 20260916-1 reached stable for F43/F44/F45 (comments #19, #20, #24). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2167279 Title: Regression in 20260911.giteeccccbe-0ubuntu1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-firmware-amd-graphics/+bug/2167279/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
