Radeon Video: Difference between revisions
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== Kernel Modesetting (KMS) == | == Kernel Modesetting (KMS) == | ||
To enable KMS at boot: | To enable [[KMS]] at boot: | ||
# Add the <code>radeon</code> and <code>fbcon</code> modules to {{Path|/etc/modules}}: {{Cmd|$ echo radeon >> /etc/modules<br />$ echo fbcon >> /etc/modules}} | # Add the <code>radeon</code> and <code>fbcon</code> modules to {{Path|/etc/modules}}: {{Cmd|$ echo radeon >> /etc/modules<br />$ echo fbcon >> /etc/modules}} | ||
# Install <code>mkinitfs</code>: {{Cmd|apk add mkinitfs}} | # Install <code>mkinitfs</code>: {{Cmd|apk add mkinitfs}} | ||
Revision as of 09:03, 5 November 2019
The following instructions are for modern AMD GPU chipsets covered by the radeon driver.
Setup Xorg/udev
- Run the
setup-xorg-basescript. - Install the Xorg AMD video drivers:
# apk add xf86-video-ati
- For newer devices, use:
# apk add xf86-video-amdgpu
- Enable #Kernel Modesetting (KMS). Specifically, the
fbconmodule is necessary, or leaving Xorg (viaCtrl+Alt+F1or quitting) will result in a black screen until the machine is power cycled. If you have already launch Xorg and don't want to experience this effect, you canmodprobe fbconwhile Xorg is running.
Kernel Modesetting (KMS)
To enable KMS at boot:
- Add the
radeonandfbconmodules to /etc/modules:$ echo radeon >> /etc/modules
$ echo fbcon >> /etc/modules - Install
mkinitfs:apk add mkinitfs
- Enable the
kmsfeature in themkinitfsconfiguration by adding it to the features variable, e.g.,Contents of /etc/mkinitfs/mkinitfs.conf
features="keymap cryptsetup kms ata base ide scsi usb virtio ext4" - Run
mkinitfs. - Reboot to test the configuration.
Troubleshooting
Fixing MESA-LOADER errors
 Alpine no longer ships with the linux-hardened kernel (Discuss) |
The linux-hardened kernel package places restrictions on sysfs and will prevent the MESA-LOADER from working as a normal user even if added to the video group.
See https://bugs.alpinelinux.org/issues/7265
Either switch to the linux-vanilla package or apply the grsec_sysfs_restrict=0 kernel parameter to allow normal users to access hardware acceleration on the desktop.
Fixing a frozen X11 when invoking startx
You may need to set the AccelMethod to exa not glamor which is the default for the driver.
Contents of /etc/X11/xorg.conf