Created attachment 126900 [details] xorg.log X is unable to start with "radeon" driver on my PowerMac G5, 7,3 with the ultimate error "(EE) No devices detected.". I am curious because Xorg.0.log and dmesg do not show obrious errorIMHO. Forcing "fbdev" driver via the configfile works and X starts. # cat /etc/X11/xorg.conf.d/05-driver.conf Section "Device" Identifier "Radeon" Driver "radeon" #Option "DRI" "2" #Option "AccelMethod" "exa" EndSection # inxi -b Resuming in non X mode: glxinfo not found. For package install advice run: inxi --recommends System: Host: T800 Kernel: 4.7.5-gentoo ppc64 (32 bit) Desktop: MATE 1.14.1 Distro: Gentoo Base System release 2.2 Machine: No /sys/class/dmi; using dmidecode: dmidecode is not installed. CPU: Dual core PPC970FX altivec supported (-MCP-) speed/max: 1800.000000MHz/2300 MHz Graphics: Card: Advanced Micro Devices [AMD/ATI] RV350 [Radeon 9550/9600/X1050 Series] Display Server: X.org 1.18.4 driver: fbdev tty size: 132x24 Advanced Data: N/A for root Network: Card: Apple K2 GMAC (Sun GEM) driver: gem Drives: HDD Total Size: 500.1GB (3.3% used) Info: Processes: 129 Uptime: 20 min Memory: 353.1/7867.8MB Init: systemd Client: Shell (bash) inxi: 2.3.0
Created attachment 126901 [details] dmesg
Created attachment 126904 [details] .config for gentoo-sources-4.7.5
Make sure the radeon kernel driver is loaded before starting X.
Just verified it is. # lsmod | grep -i radeon radeon 1716688 1 i2c_algo_bit 7428 1 radeon hwmon 4272 1 radeon ttm 76692 1 radeon drm_kms_helper 119440 1 radeon drm 337184 4 ttm,drm_kms_helper,radeon At the moment I am starting X manually via "systemctl start lightdm".
This report reminds me of bug 92478. Have you tried moving away all xorg.conf(.d/*) files you created? (In reply to erhard_f from comment #4) > radeon 1716688 1 Looks like something is using a radeon driver character device file. What does sudo lsof /dev/dri/* say?
"lsof /dev/dri/*" as root shows no output.
I built a new kernel and added following config options: CONFIG_VGA_ARB=y, CONFIG_FB_RADEON=m, CONFIG_DEVTMPFS_MOUNT=y. I removed: CONFIG_FB_OF, CONFIG_FB_SIMPLE. Still activated is; CONFIG_DRM_KMS_HELPER=m, CONFIG_DRM_KMS_FB_HELPER=y, CONFIG_DRM_FBDEV_EMULATION=y. "radeon"-driver still does not work, but at least the Xorg.0.log (see attatched xorg.log_v2) and dmesg are more verbose. It seems to look for /dev/dri/ devices but there are none. I only got /dev/fb0. # cat /proc/fb 0 ATI Radeon 4150 # lsmod | grep -i radeon radeon 1717072 0 hwmon 4272 1 radeon ttm 76692 1 radeon drm_kms_helper 119440 1 radeon drm 339744 3 ttm,drm_kms_helper,radeon radeonfb 78368 2 cfbfillrect 4224 2 drm_kms_helper,radeonfb cfbcopyarea 3584 2 drm_kms_helper,radeonfb cfbimgblt 2560 2 drm_kms_helper,radeonfb i2c_algo_bit 7428 2 radeonfb,radeon fb_ddc 2560 1 radeonfb # dmesg | grep -i radeon [ 8.398541] radeonfb_pci_register BEGIN [ 8.398558] radeonfb 0000:f0:10.0: enabling device (0006 -> 0007) [ 8.596608] radeonfb (0000:f0:10.0): Found 131072k of DDR 128 bits wide videoram [ 8.596828] radeonfb (0000:f0:10.0): mapped 16384k videoram [ 8.596864] radeonfb: Found Open Firmware ROM Image [ 8.596876] radeonfb: Retrieved PLL infos from Open Firmware [ 8.596880] radeonfb: Reference=27.00 MHz (RefDiv=12) Memory=200.00 Mhz, System=325.00 MHz [ 8.596884] radeonfb: PLL min 12000 max 35000 [ 8.597003] radeonfb 0000:f0:10.0: I2C bus monid registered. [ 8.597068] radeonfb 0000:f0:10.0: I2C bus dvi registered. [ 8.597133] radeonfb 0000:f0:10.0: I2C bus vga registered. [ 8.597199] radeonfb 0000:f0:10.0: I2C bus crt2 registered. [ 9.030027] radeonfb: I2C (port 1) ... not found [ 9.460042] radeonfb: I2C (port 2) ... not found [ 9.890070] radeonfb: I2C (port 3) ... not found [ 10.143428] radeonfb: I2C (port 4) ... not found [ 10.143436] radeon_probe_OF_head [ 10.143453] radeon_probe_OF_head [ 10.576689] radeonfb: I2C (port 3) ... not found [ 10.826683] radeonfb: I2C (port 4) ... not found [ 10.827682] radeonfb: Monitor 1 type DFP found [ 10.827689] radeonfb: EDID probed [ 10.827692] radeonfb: Monitor 2 type no found [ 10.851080] radeonfb (0000:f0:10.0): ATI Radeon 4150 "AP" [ 10.851081] radeonfb_pci_register END [ 12.484886] [drm] radeon kernel modesetting enabled.
Created attachment 127041 [details] xorg.log_v2
(In reply to erhard_f from comment #7) > [ 10.851080] radeonfb (0000:f0:10.0): ATI Radeon 4150 "AP" > [ 10.851081] radeonfb_pci_register END > [ 12.484886] [drm] radeon kernel modesetting enabled. radeonfb initializes first, so the radeon driver cannot initialize in KMS mode. You need to prevent radeonfb from initializing before the radeon driver, either via something like video=radeonfb:off on the kernel command line, or by preventing the radeonfb module from loading at all.
Finally sorted it out with your help from here. The main issue was "VGA Arbitration" in the kernel-config, Device Drivers -> Graphics support. On my config (PowerMac G5, AGP graphics card) I need to have CONFIG_VGA_ARB=y enabled. With CONFIG_VGA_ARB=y in combination with CONFIG_DRM_FBDEV_EMULATION=y and CONFIG_FB_OF=y I get a working concole and working X with "radeon"-driver. Other framebuffer drivers must not be selected in the kernel config. With these options set correctly no xorg.conf is needed. The framebuffer console switches from Open Firmware to the radeon driver and the output looks like this: # dmesg | grep -i rade [ 8.365707] [drm] radeon kernel modesetting enabled. [ 8.365765] fb: switching to radeondrmfb from OFfb ATY,Piton_ [ 8.390327] fb: switching to radeondrmfb from OFfb ATY,Piton_ [ 8.393385] radeon 0000:f0:10.0: enabling device (0006 -> 0007) [ 8.395828] radeon 0000:f0:10.0: Invalid PCI ROM header signature: expecting 0xaa55, got 0xffff [ 8.500921] radeon 0000:f0:10.0: VRAM: 256M 0x00000000A0000000 - 0x00000000AFFFFFFF (128M used) [ 8.500927] radeon 0000:f0:10.0: GTT: 512M 0x0000000080000000 - 0x000000009FFFFFFF [ 8.504153] [drm] radeon: 128M of VRAM memory ready [ 8.504157] [drm] radeon: 512M of GTT memory ready. [ 8.506559] [drm] radeon: 1 quad pipes, 1 Z pipes initialized. [ 8.506661] radeon 0000:f0:10.0: WB enabled [ 8.506670] radeon 0000:f0:10.0: fence driver on ring 0 use gpu addr 0x0000000080000000 and cpu addr 0xc00000026a6c7000 [ 8.506754] [drm] radeon: irq initialized. [ 8.665381] [drm] radeon: ring at 0x0000000080001000 [ 8.666957] [drm] Radeon Display Connectors [ 8.882890] radeon 0000:f0:10.0: fb0: radeondrmfb frame buffer device [ 8.886343] [drm] Initialized radeon 2.45.0 20080528 for 0000:f0:10.0 on minor 0 # cat /proc/fb 0 radeondrmfb
Looks like it was a kernel configuration issue, not a (radeon driver) bug. Anyway, glad you got it working.
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