[REGRESSION, bisected] KMS can't initialize GeForce GTX 460 after commit a6a0f67ca7aae2e6bec7ebf55d1e4853dc220816
Submitted by Luke Tidd
Assigned to Nouveau Project
Description
Created attachment 126259
dmesg_4.5.1-1-ARCH video working flawlessly
Originally diagnosed in https://bbs.archlinux.org/viewtopic.php?id=216364
distro is Arch. Music studio machine with an nvidia GeForce GTX 460 and "ACHIEVA Shimian QH270-Lite 27" Wide QHD PC Monitor DVI-D 2560x1440" connected via DVI.
Have been using nouveau without issue since 2012. Kernel update from 4.5.1-1 to (4.6.4-1 or 4.6.7-rt11-2-rt) causes a lower than standard resolution during kernel messages then no video once X attempts to start. Reverting to 4.5.1-1 works perfectly. "nomodeset single" kernel options allow me to get to a terminal.
some package versions that don't change between kernels:
extra/mesa 12.0.2-1 [installed]
extra/xf86-video-nouveau 1.0.12-2 (xorg-drivers xorg) [installed]
Attachment 126259, "dmesg_4.5.1-1-ARCH video working flawlessly":
dmesg_4.5.1-1-ARCH