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AMD RADEON X800 XL VS AMD RADEON HD 3870 DRIVER

(=) FontPath set to: /usr/share/fonts/misc, /usr/share/fonts/TTF, /usr/share/fonts/OTF (=) ModulePath set to "/usr/lib/xorg/modules" (II) The server relies on udev to provide the list of input devices. (WW) The directory "/usr/share/fonts/75dpi" does not exist. (WW) The directory "/usr/share/fonts/100dpi" does not exist. (=) Automatically adding devices (=) Automatically enabling devices (=) Automatically adding GPU devices (=) Automatically binding GPU devices (=) Max clients allowed: 256, resource mask: 0x1fffff (WW) The directory "/usr/share/fonts/Type1" does not exist. (**) |->Screen "Default Screen Section" (0) (**) | |->Monitor "" (=) No monitor specified for screen "Default Screen Section". (=) Log file: "/var/log/Xorg.0.log", Time: Tue Dec 21 16:37:17 2021 (=) Using config directory: "/etc/X11/" (=) Using system config directory "/usr/share/X11/" (=) No Layout section. Markers: (-) probed, (**) from config file, (=) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (?) unknown. My System Info: System: Host: imac Kernel: 5.10.84-1-MANJARO x86_64 bits: 64 compiler: gcc v: 11.1.0 Desktop: KDE Plasma 5.23.4 tk: Qt 5.15.2 wm: kwin_x11 dm: SDDM Distro: Manjaro Linux base: Arch Linux Machine: Type: Desktop System: Apple product: iMac12,1 v: 1.0 serial: Chassis: type: 13 v: Mac-942B5BF58194151B serial: Mobo: Apple model: Mac-942B5BF58194151B serial: UEFI: Apple v: 87.0.0.0.0 date: Graphics: Device-1: Intel 2nd Generation Core Processor Family Integrated Graphics driver: i915 v: kernel bus-ID: 00:02.0 chip-ID: 8086:0102 Device-2: AMD Whistler vendor: Apple driver: radeon v: kernel bus-ID: 01:00.0 chip-ID: 1002:6741 Device-3: Apple FaceTime HD Camera (Built-in) type: USB driver: uvcvideo bus-ID: 1-2:3 chip-ID: 05ac:850b Display: x11 server: X.Org 1.21.1.2 compositor: kwin_x11 driver: loaded: ati,modesetting,radeon alternate: fbdev,vesa resolution: 1: 1920x1080~60Hz 2: 1050x1680~60Hz s-dpi: 96 /var/log/Xorg.0.log: (-) Log file renamed from "/var/log/" to "/var/log/Xorg.0.log" X.Org X Server 1.21.1.2 X Protocol Version 11, Revision 0 Current Operating System: Linux imac 5.10.84-1-MANJARO #1 SMP PREEMPT Wed Dec 8 09:50: x86_64 Kernel command line: BOOT_IMAGE=/boot/vmlinuz-5.10-x86_64 root=UUID=51335112-b2bd-441f-90fa-4d42349c1b07 rw udev.log_priority=3 Current version of pixman: 0.40.0 Before reporting problems, check to make sure that you have the latest version.

AMD RADEON X800 XL VS AMD RADEON HD 3870 DRIVER

I guess that the problem may be caused by radeon driver for iMac12,1 Radeon 6750M. IMac12 with 6770M (0圆740) or 6970M (0圆720) had means there were directoriesīut all iMac12,1 with 6750M (0圆741) had only there were no /sys/class/backlight/radeon_bl0/. Inspecting systemd-analyze logs (if provided) from Linux Hardware Database,

AMD Radeon HD 6970M / BARTS ChipID=0圆720.

AMD Radeon HD 6770M / TURKS ChipID=0圆740Īnd model iMac12,2 aslo has two dedicated graphics options:.

AMD Radeon HD 6750M / TURKS ChipID=0圆741.

I find a clue that, model iMac12,1 has two dedicated graphics options: It's reported that backlight can be adjusted on iMac12,2 (27" 2011).Īnd some people can do on iMac12,1, whereas some can not. Only reboot can restore the original brightness. The display will get stuck in discomfortable highest brightness after resuming from suspend. Though the value of can be changed, the display stays unchanged. Or use the DE brightness applet which updates the aforenamed file.

I can manually modify the value of /sys/class/backlight/acpi_video0/brightness, Under /sys/class/backlight/, ACPI exposed only acpi_video0, but no radeon_bl0.