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<!-- SC_OFF --><div class="md"><p>I recently switched from Pop OS to Arch. I installed the intel mesa graphics, the nvidia graphics, nvidia-utils, nvidia-settings, and nvidia-prime. I enabled Nvidia DRM and the persistence daemon is working. My laptop monitor works but my external monitor no longer works. Both monitors actually worked when I first installed arch, but it doesn't work anymore. The laptop monitor is controlled by the integrated Intel GPU and the external monitor is controlled by an Nvidia GPU. The monitor is detected in the KDE display configuration menu as a disabled monitor. All of its correct resolutions and refresh rates are listed, but the settings application crashes when I try to enable it. I installed arandr and tried to enable the monitor from there. Arandr also lists the monitor as disabled with its correct resolutions and refresh rates. However, when I try to enable the monitor, I get the following error message:</p> <p>​</p> <blockquote> <p>XRandR failed:</p> <p>XRandR returned error code 1 : b'xrandr: Configure crtc 3 failed\n'</p> </blockquote> <p>​</p> <p>When I try to open nvidia-settings from the terminal, it gives the following error:</p> <blockquote> <p>ERROR: Unable to load info from any available system</p> </blockquote> <p>​</p> <p>I know both gpus are working. Here is the output of glxinfo | grep "OpenGL renderer"</p> <blockquote> <p>$ glxinfo | grep "OpenGL renderer"</p> <p>OpenGL renderer string: Mesa Intel(R) UHD Graphics 630 (CFL GT2)</p> </blockquote> <p>​</p> <p>And here is the output of the same thing but with prime-run:</p> <blockquote> <p>$prime-run glxinfo | grep "OpenGL renderer"</p> <p>OpenGL renderer string: NVIDIA GeForce GTX 1660 Ti with Max-Q Design/PCIe/SSE2</p> </blockquote> <p>​</p> <p>The system info shows that the Intel Mesa graphics are in use <a href="https://cdn.discordapp.com/attachments/808347995292565504/887592407066083338/unknown.png">in this screenshot</a></p> <p>​</p> <p>When I try to blacklist the intel drivers, neither monitors work.</p> <p>​</p> <p>However, when I run nvidia-xconfig, it creates an xorg.conf that actually makes the external monitor work, but the laptop monitor doesn't work. Deleting the xorg.conf switches it back; the laptop monitor works but the external monitor doesn't.</p> <p>​</p> <p><a href="https://cdn.discordapp.com/attachments/808347995292565504/887608380158509086/unknown.png">Here is a screenshot of the KDE system info with the nvidia xorg.conf.</a> The Nvidia drivers are in use this time, but the intel ones are not.</p> <p>​</p> <p>I need help getting both monitors to work at the same time. The error messages I got probably aren't specific enough to troubleshoot, The first step is to some kind of log where I could find a potential error.</p> </div><!-- SC_ON -->   submitted by   <a href="https://www.reddit.com/user/bluecookie25565"> /u/bluecookie25565 </a> <br/> <span><a href="https://www.reddit.com/r/archlinux/comments/pp366p/external_monitor_detected_but_not_working_on/">[link]</a></span>   <span><a href="https://www.reddit.com/r/archlinux/comments/pp366p/external_monitor_detected_but_not_working_on/">[comments]</a></span> |