http://bugzilla.opensuse.org/show_bug.cgi?id=1188954 Bug ID: 1188954 Summary: black screen on initial X open on Kaveri Radeon R7, /dev/dri/card0: No such file or directory with radeon.cik_support=0 amdgpu.cik_support=1 Classification: openSUSE Product: openSUSE Tumbleweed Version: Current Hardware: Other OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Kernel Assignee: kernel-bugs@opensuse.org Reporter: mrmazda@earthlink.net QA Contact: qa-bugs@suse.de CC: sndirsch@suse.com Found By: --- Blocker: --- Created attachment 851460 --> http://bugzilla.opensuse.org/attachment.cgi?id=851460&action=edit Xorg.0.log and dmesg Initial summary: black screen on initial X open on Kaveri Radeon R7, /dev/dri/card0: No such file or directory with radeon.cik_support=0 amdgpu.cik_support=1 To reproduce: 1-boot with included on kernel cmdline radeon.cik_support=0 amdgpu.cik_support=1 2-wait for X to fail to start 3-login on a tty 4-systemctl restart xdm Actual behavior: 1-X fails to start, finding no /dev/dri/card0, leaving login prompt on tty1 on display screen 2-X starts normally using amdgpu DDX driver Expected behavior: 1-X starts normally using amdgpu DDX driver Tested with kernels 5.12.13, 5.11.16, 5.7.11 # inxi -SGIay System: Host: asa88 Kernel: 5.12.13-1-default x86_64 bits: 64 compiler: gcc v: 11.1.1 parameters: BOOT_IMAGE=/boot/vmlinuz root=LABEL=tvgp07stw noresume ipv6.disable=1 net.ifnames=0 mitigations=auto consoleblank=0 radeon.cik_support=0 amdgpu.cik_support=1 video=1024x768@60 video=1440x900@60 drm.debug=0x1e log_buf_len=1M Console: tty pts/0 DM: TDM Distro: openSUSE Tumbleweed 20210730 Graphics: Device-1: AMD Kaveri [Radeon R7 Graphics] vendor: ASUSTeK driver: amdgpu v: kernel alternate: radeon bus-ID: 00:01.0 chip-ID: 1002:130f class-ID: 0300 Display: server: X.org 1.20.12 driver: loaded: vesa unloaded: fbdev,modesetting alternate: ati Message: Advanced graphics data unavailable for root. Info:...inxi: 3.3.06 Comments: 1-without radeon.cik_support=0 amdgpu.cik_support=1 on cmdline, X cannot be coaxed into using amdgpu DDX driver via /etc/X11/xorg.conf.d/*conf 2-without radeon.cik_support=0 amdgpu.cik_support=1, greeter startup completes (normally, on first try) using modesetting DIX driver -- You are receiving this mail because: You are the assignee for the bug.