https://bugs.freedesktop.org/show_bug.cgi?id=99261
Bug ID: 99261 Summary: Kernel 4.10-rc2 on APU with Kaveri + Topaz : boot hangs on switch to amdgpudrmfb Product: DRI Version: XOrg git Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: blocker Priority: medium Component: DRM/AMDgpu Assignee: dri-devel@lists.freedesktop.org Reporter: nmset@netcourrier.com
Created attachment 128729 --> https://bugs.freedesktop.org/attachment.cgi?id=128729&action=edit kernel log on boot failure
Since testing kernel 4.10 preRC, RC1 and RC2, my laptop hangs on boot at line fb : switch to amdgpudrmfb from EVI VGA.
A few specs :
APU : AMD A10-7300 Radeon R6, 10 Compute Cores 4C+6G (from /proc/cpuinfo). iGPU : 00:01.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Kaveri HDMI/DP Audio Controller dGPU : 01:00.0 Display controller: Advanced Micro Devices, Inc. [AMD/ATI] Topaz XT [Radeon R7 M260/M265 / M340/M360 / M440/M445] Xorg : 1.18.4, on Arch Linux Boot command line : BOOT_IMAGE=/boot/vmlinuz-linux root=UUID=76ba28b4-683c-4a39-96ef-6a1105905567 rw acpi=off (I have to use acpi=off on 4.10-rcX to go beyonf initramfs loading)
Whatever amdgpu module's option combination I use is of no avail. These ones (aspm=0 bapm=0 runpm=0 powerplay=1) allow me to use amdgpu on 4.9.
Attached is a kernel.log file where there is a stack trace of amdgpu module crashing.
I can use 4.10-rc2 on my desktop with RX480 and an old Phenom II x6 CPU.
I am posting here in the hope of getting developer attention to care about this module's crashing, on KMS seemingly. If I use nomodeset, the module gets loaded, but obviously, there's no X session beyond.
Regards.