| Summary: | Kernel 4.10-rc2 on APU with Kaveri + Topaz : boot hangs on switch to amdgpudrmfb | ||||||
|---|---|---|---|---|---|---|---|
| Product: | DRI | Reporter: | SET <nmset> | ||||
| Component: | DRM/AMDgpu | Assignee: | Default DRI bug account <dri-devel> | ||||
| Status: | RESOLVED NOTABUG | QA Contact: | |||||
| Severity: | blocker | ||||||
| Priority: | medium | CC: | nmset | ||||
| Version: | XOrg git | ||||||
| Hardware: | x86-64 (AMD64) | ||||||
| OS: | Linux (All) | ||||||
| Whiteboard: | |||||||
| i915 platform: | i915 features: | ||||||
| Attachments: |
|
||||||
The driver is not able to find the vbios: Jan 3 16:28:52 hp2 kernel: [ 10.626851] [drm:amdgpu_get_bios [amdgpu]] *ERROR* Unable to locate a BIOS ROM Possibly the related to this: https://bugzilla.kernel.org/show_bug.cgi?id=141741 I tried to bisect for the first time, here's what I did : git bisect start git bisect bad git bisect good v4.9 Bisecting: 5782 revisions left to test after this (roughly 13 steps) [72cca7baf4fba777b8ab770b902cf2e08941773f] Merge tag 'staging-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging ... compile ... The resulting kernel loads amdgpu with a usable X. git bisect good Bisecting: 2865 revisions left to test after this (roughly 12 steps) [775fadd09e7beac2fc61cc0517629e9fa69bdb56] Merge tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Now I don't know what else to do ! This patch seems to indicate locating vbios is being reworked, something is probably left out. https://lists.freedesktop.org/archives/amd-gfx/2016-December/004179.html Thx. (In reply to SET from comment #2) > I tried to bisect for the first time, here's what I did : > > git bisect start > git bisect bad > git bisect good v4.9 > Bisecting: 5782 revisions left to test after this (roughly 13 steps) > [72cca7baf4fba777b8ab770b902cf2e08941773f] Merge tag 'staging-4.10-rc1' of > git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging > > ... compile ... The resulting kernel loads amdgpu with a usable X. > > git bisect good > Bisecting: 2865 revisions left to test after this (roughly 12 steps) > [775fadd09e7beac2fc61cc0517629e9fa69bdb56] Merge tag 'armsoc-defconfig' of > git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc > > Now I don't know what else to do ! if things work: git bisect good of things don't work: git bisect bad and continue until it's done. > > This patch seems to indicate locating vbios is being reworked, something is > probably left out. > https://lists.freedesktop.org/archives/amd-gfx/2016-December/004179.html That code is not upstream yet. We haven't really touched the vbios fetching code in a long time, so if you are seeing a regression, it's probably somewhere else. Well, the hang up on switch to amdgpudrmfb was due to the kernel boot parameter 'acpi=off' I had to use to go beyond the 'loading initramfs' step. Initial hangup in the latter step was due to a UEFI bug of the laptop. Fortunately, the manufacturer provides a BIOS update with the tag 'UEFI security enhancement'. After flashing the new BIOS, the laptop boots with kernel 4.10-rc2, with a few errors related to amdgpu, which I'll report in a new post. Sorry for the inconvenience. |
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.
Created attachment 128729 [details] 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.