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<p>Hi <span>nouveau@lists.freedesktop.org</span>,</p>
<p><br>
</p>
<p>I hope someone on this list can point me in some useful direction concerning the following problem:<br>
</p>
<p><br>
</p>
<p>After upgrade from Fedora 34/XFCE to Fedora 36/XFCE, I experience a black screen instead of a login prompt, unless I make a file named
<span>/etc/X11/xorg.conf.d/<span>90-monitor.conf</span> which contains eg</span><br>
</p>
<p><br>
</p>
<p></p>
<div>Section "Monitor"<br>
Identifier "DP-1"<br>
Option "PreferredMode" "<span>720x480</span>"<br>
EndSection</div>
<div><br>
</div>
<div>Before the upgrade from Fedora 34 to 36, everything worked if the file looked like this:</div>
<div><br>
</div>
<div>
<div>Section "Monitor"<br>
Identifier "DP-1"<br>
Modeline "3840x2160" 533.25 3840 3888 3920 4000 2160 2163 2168 2222 +hsync -vsync<br>
Option "PreferredMode" "3840x2160"<br>
EndSection<br>
<br>
</div>
But that does not work on my Fedora 36.<br>
</div>
<div><br>
</div>
<div>I use XFCE instead of Gnome. XFCE seems to use X as opposed to Fedora in general and Gnome in particular who use Wayland.<br>
</div>
<div><br>
</div>
<div>If I hand compile the EDID from the screen, I find the following resolutions: Established timings: 800x600, 800x600, 800x600, 800x600, 832x624, 1024x768, 1024x768, 1024x768, 1280x1024. Standard timings: 1920x1080, 1680x1050, 1440x900, 1280x1024, 1280x960,
1280x720. Detailed timings: 3840x2160, 2560x1440, 1280x720, 720x480, 720x576, 1920x2160. The EDID looks fine as far as I can see.<br>
</div>
<div><br>
</div>
<div>I have tried all standard and detailed timings and three established timings (boot at runlevel 3, modify
<span><span>90-monitor.conf, telinit 5, repeat). All resolutions except <span>3840x2160, 2560x1440</span> and
<span>1920x1080</span> work acceptably. <span><span><span>3840x2160 and 2560x1440 give a black screen and a monitor poweroff.
<span><span><span>1920x1080</span></span></span> gives a noisy, psychedelic screen which remotely resembles a login screen.</span></span></span></span></span></div>
<div><br>
</div>
<div>If I boot with no <span><span>90-monitor.conf</span> </span>at all then /var/log/Xorg.0.log seems to be in conflict with itself. First, all resolutions including
<span><span><span><span><span>3840x2160</span></span></span></span></span> are recognized and agree with what I got out of reading the EDID. But then Xorg.0.log says:</div>
<div><br>
</div>
<div>
<div>[ 38.974] (II) modeset(0): Not using default mode "2560x1440" (bad mode clock/interlace/doublescan)<br>
<br>
</div>
But <span><span><span><span><span>3840x2160</span></span></span></span></span> is the default mode.
<span><span><span><span><span>3840x2160</span></span></span></span></span> is the first detailed timing record. So it seems that first
<span><span><span><span><span>3840x2160</span></span></span></span></span> is recognized, then ignored, then
<span>2560x1440</span> is frowned upon, then used anyways.</div>
<div><br>
</div>
<div>I have attached /var/log/messages and /var/log/Xorg.0.log from a Fedora 36 and a Fedora 34 boot. I do not yet have a kernel log, but I hope I can get one by doing an ssh into the box after the monitor goes blank.</div>
<div><br>
</div>
<div>By the way, when I boot Fedora 36 to runlevel 3 then the monitor switches to a resolution of
<span><span><span><span><span>3840x2160 and I get a tiny command line. It is when I then do telinit 5 that the screen goes blank.</span></span></span></span></span><br>
</div>
<p></p>
<p><br>
</p>
<p>In preparation of asking a question on the present list, I have run through <a href="https://nouveau.freedesktop.org/TroubleShooting.html" class="OWAAutoLink" id="LPlnk632209" previewremoved="true">
https://nouveau.freedesktop.org/TroubleShooting.html</a> in general and the section "<span>Are you clear of other kernel drivers that break Nouveau</span>" in particular. I think I have no other video drivers than Nouveau, but I have done this:</p>
<p><br>
</p>
<p><span>sudo find /usr -type f -iname "*nvidia*" -print > stdout 2>stderr</span></p>
<p><br>
</p>
<p>I can see some nvidia stuff in stdout. In particular, I can see a file named <span>
typec_nvidia.ko.xz</span>, and TroubleShooting.html warns about a file named <span>
nvidia.ko</span>. Can anyone on the list tell if there is something suspicious in the attached
<span>search-nvidia-stdout</span>?</p>
<p><br>
</p>
<p>Cheers,</p>
<p>Klaus</p>
<br>
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