![]() Try adding the nouveau.noaccel=1 kernel parameter. Specific Nvidia chips with Nouveau may give random system lockups and more commonly throw many kernel messages, seen with dmesg. Random lockups with kernel error messages This can be added to the xinit configuration. The phantom output can be disabled in Xorg by adding the following to /etc/X11//nf: The nouveau kernel module also has an option to disable TV-out detection : The problem can be overcome by disabling the phantom output (VGA-1 in the examples given) with Kernel parameters: This causes display problems and/or prevent suspending on lid closure. For example, both VGA-1 and LVDS-1 are shown as connected but only LVDS-1 is present. It is possible for the nouveau driver to detect "phantom" outputs. If you are still having problems loading the module or starting the X server, append nfig=NvMSI=0 to your Kernel parameters. View loaded video module parameters and values: TroubleshootingĪdd drm.debug=14 and log_buf_len=16M to your kernel parameters to turn on video debugging: Tip: Do not forget to turn off compositing of your DE's window manager like KWin when using a different compositor. # echo pstate > /sys/kernel/debug/dri/0/pstate It is also possible to manually set/force a certain power state by writing to said interface: Experimental support for GPU reclocking is available for some cards (see the Nouveau PowerManagement page) and since kernel 4.5 can be controlled through a debugfs interface located at /sys/kernel/debug/dri/*/pstate.įor example, to check the available power states and the current setting for the first card in your system, run: The lack of proper power management in the nouveau driver is one of the most important causes of performance issues, since most cards will remain in their lower power state with lower clocks during their use. You can pass the resolution to nouveau with the video= kernel line option (see KMS). See Multihead#RandR how to setup multiple monitors by using RandR. linux-git AUR PKGBUILD to use the Nouveau tree at, instead of making a package from scratch.Installing the latest development packages If you already used the NVIDIA driver, and want to test Nouveau without reboot, make sure the 'nvidia' module is no longer loaded:Īnd check that it loaded fine by looking at kernel messages: If you want to keep the proprietary NVIDIA driver installed (and are not using OpenGL), but want to use the Nouveau driver, comment out nouveau blacklisting in /etc/modprobe.d/nouveau_nf, /usr/lib/modprobe.d/nf, or /usr/lib/modprobe.d/nf modifying it as follows:Īnd tell Xorg to load nouveau instead of nvidia by creating the file /etc/X11//nf with the following content: Tips and tricks Keep NVIDIA driver installed ![]() etc/nf FILES="/lib/firmware/edid/your_edid.bin" If you are using a custom EDID file, you should embed it into initramfs as well: To do this, add nouveau to the MODULES array in /etc/nf (module names are separated by spaces): It is also possible to start the KMS as early as possible in the boot process, when the initramfs is loaded. See the Nouveau KernelModeSetting page for more details. You will see the text "Loading modules" and the size of the text may change, possibly with an undesirable flicker. ![]() By default, the KMS is done after the other kernel modules are loaded. Kernel mode setting (KMS) is required by the Nouveau driver. Tip: If you have problems with the resolution, check Kernel mode setting#Forcing modes and EDID. It is probably a good idea to rename the file.
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