<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Kernel 4.20 amdgpu fails to load firmware on Ryzen 2500U" href="https://bugs.freedesktop.org/show_bug.cgi?id=109206#c44">Comment # 44</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Kernel 4.20 amdgpu fails to load firmware on Ryzen 2500U" href="https://bugs.freedesktop.org/show_bug.cgi?id=109206">bug 109206</a> from <a class="email" href="mailto:ondrej@lang.sk" title="Ondrej Lang <ondrej@lang.sk>"> Ondrej Lang</a> <pre>Created <a href="attachment.cgi?id=144316" name="attach_144316" title="Kernel log 5.1.3 showing amdgpu drm crash">attachment 144316</a> <a href="attachment.cgi?id=144316&action=edit" title="Kernel log 5.1.3 showing amdgpu drm crash">[details]</a> Kernel log 5.1.3 showing amdgpu drm crash Experiencing the same problem. On boot with any kernel > 4.20, the graphics is not initialized, few scrambled lines appear at the bottom of the screen and then the screen goes blank. The system actually boots as when I entered my credentials (on the black screen) and did "cat dmesg > dmesg.txt", when I rebooted with kernel 4.19 the file was there (I have attached it to this thread). The relevant portion of the dmesg log is: [ 5.133929] [drm] REG_WAIT timeout 1us * 100000 tries - mpc1_assert_idle_mpcc line:103 [ 5.134034] WARNING: CPU: 2 PID: 367 at drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:277 generic_reg_wait.cold.0+0x29/0x30 [amdgpu] ... [ 5.134925] drm_dev_register+0x111/0x150 [drm] [ 5.135335] [drm] Display Core initialized with v3.2.17! [ 5.642999] [drm:hwss_edp_wait_for_hpd_ready [amdgpu]] *ERROR* hwss_edp_wait_for_hpd_ready: wait timed out! [ 6.142512] [drm:hwss_edp_wait_for_hpd_ready [amdgpu]] *ERROR* hwss_edp_wait_for_hpd_ready: wait timed out! [ 6.143119] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [ 6.143121] [drm] Driver supports precise vblank timestamp query. [ 6.158613] [drm] VCN decode and encode initialized successfully(under SPG Mode). [ 6.161822] [drm] Cannot find any crtc or sizes [ 6.188933] [drm] Initialized amdgpu 3.30.0 20150101 for 0000:04:00.0 on minor 0 I can also confirm that as a workaround, removing/moving file /lib/firmware/amdgpu/raven_dmcu.bin and regenerating the initramfs ("mkinitcpio -p linux" on Arch linux) allows the 5.1.3 kernel to boot normally (I can also start an X session and everything seems to be fine) and there are no drm errors in dmesg anymore. System: HP ENVY x360 Convertible 15-bq1xx/83C6, BIOS F.20 12/25/2018 Kernel: 5.1.3-arch1-1-ARCH Grub kernel parameters: amd_iommu=on iommu=pt idle=nomwait If you need anything else let me know</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>