On Tuesday, 25 June 2024 19:54:33 BST Dale wrote: > Michael wrote: > > You need to have USE="elogind -systemd" in your make.conf, then add the > > elogind service to the *boot* runlevel as shown here: > > > > https://wiki.gentoo.org/wiki/Elogind > > I read down through that. I did find that acl had made it into the USE > flag line. I removed it.
You shouldn't have. > It's not on my main rig so no idea where that > came from. It is enabled by the profile defaults: ~ $ euse -I acl global use flags (searching: acl) ************************************************************ [+ CD ] /var/db/repos/gentoo/profiles/use.desc:acl - Add support for Access Control Lists [snip ...] > > Can you please save and attach as plain text files your: > > > > 1. dmesg > > 2. Xorg.0.log > > 3. ~/.local/share/sddm/xorg-session.log > > 4. /var/log/sddm.log > > > > after you end up in a black screen, in case they reveal something. > > Should be attached. I blanked the files and then rebooted and started > display-manager, (DM). You should have only the most recent info. I'm > also putting a chunk of messages below. It might help. It isn't much. > Same as before it seems. I still say this is something simple but hard > to find. :/ > > Dale > > :-) :-) > > Messages: [snip ...] > Jun 25 13:31:18 Gentoo-1 kernel: nvidia-modeset: WARNING: GPU:0: Unable > to read EDID for display device DP-3 The above message indicates the same problem you had experienced before you reinstalled. The monitor is not sending its EDID table, or the card can't read it. Your Xorg sets a default dummy resolution of 640 x 480, because it can't find anything connected to the card. Things I would try, until someone who can grok nvidia contributes better ideas: Eliminate the hardware being the cause of the problem, e.g.: try a different cable, different monitor, then try the same card (with same drivers and same kernel settings) on your other PC. If this proves there's nothing wrong with the cable, card, or kernel settings: 1. Try different ports and restart display-manager each time. 2. Add these two lines at the bottom of /usr/share/sddm/scripts/Xsetup: xrandr --setprovideroutputsource modesetting NVIDIA-0 xrandr --auto Again restart display-manager. 3. Add a file /etc/X11/xorg.conf.d/20nvidia.conf Section "Device" Identifier "nvidia" Driver "nvidia" BusID "PCI:9:0:0" Option "UseEDID" "false" ## Try this too ## EndSection Again restart display-manager. Every time you try a setting and it doesn't produce the goods, revert it before you try the next thing. Make notes and keep an eye on your logs in case you spot a difference. If none of these tweaks work, then you can try capturing the EDID table and creating a file for the card to load. HTH.
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