<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <style type="text/css" style="display:none;"></style> </head> <body dir="ltr"> <div id="divtagdefaultwrapper" style="font-size:12pt;color:#000000;font-family:Calibri,Helvetica,sans-serif;" dir="ltr"> Hi <span>nouveau@lists.freedesktop.org</span> <div style="color: rgb(0, 0, 0);"> <div> <div id="divtagdefaultwrapper" dir="ltr" style="font-size:12pt; color:#000000; font-family:Calibri,Helvetica,sans-serif"> <div id="divtagdefaultwrapper" dir="ltr" style="font-size:12pt; color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,"EmojiFont","Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols"> <p><br> </p> <p>As a follow up on my previous mail, I have noted that my problem is near-identical to <a href="https://gitlab.freedesktop.org/drm/intel/-/issues/1922" class="OWAAutoLink" id="LPlnk856428" previewremoved="true"> https://gitlab.freedesktop.org/drm/intel/-/issues/1922</a></p> <p><br> </p> <p>Issue 1922 was closed because the reporter wrote "<span>sorry, I actually upgraded my system a while ago and I no longer have access to the one with this problem</span>". Thus, the issue was no longer reproducible and was closed.</p> <p><br> </p> <p>Now I have a system which reproduces issue 1922.</p> <p><br> </p> <p>When I add " drm.debug=0x1ff log_buf_len=100M" as kernel parameters at boot, I get the attached output from dmesg from Fedora 36. I cannot attach the corresponding output from Fedora 34 because of the size limitations of the present mailing list. The interesting lines of dmesg-drm-stdout-34 read:</p> <p><br> </p> <div> <div>[ 2.402685] [drm:drm_mode_debug_printmodeline [drm]] Modeline "3840x2160": 60 533250 3840 3888 3920 4000 2160 2163 2168 2222 0x48 0x9<br> [ 2.402703] [drm:drm_mode_prune_invalid [drm]] Not using 3840x2160 mode: CLOCK_HIGH</div> <div><br> </div> <div>The interesting lines of dmesg-drm-stdout-36 read:<br> <br> </div> <div>[ 2.926857] [drm:drm_mode_debug_printmodeline] Modeline "3840x2160": 60 533250 3840 3888 3920 4000 2160 2163 2168 2222 0x48 0x9<br> [ 2.926861] [drm:drm_mode_prune_invalid] Not using 3840x2160 mode: CLOCK_HIGH<br> <br> </div> The difference between Fedora 34 and 36 is that under Fedora 34 I can enforce <span> 3840x2160 using a suitable <span>/etc/X11/xorg.conf.d/<span>90-monitor.conf. That does not work under Fedora 36 where the monitor goes blank and then turns off instead of showing a login screen.</span></span></span></div> <div><br> </div> <div>By the way, I have compared the pixel clock, horizontal clock and vertical clock to the maxima defined in the EDID, and I cannot spot any clock which is too high.<br> </div> <br> Question is: What should I do now? Should I open a new issue and link to issue 1922?</div> <div dir="ltr" style="font-size:12pt; color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,"EmojiFont","Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols"> <br> </div> <div dir="ltr" style="font-size:12pt; color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,"EmojiFont","Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols"> Cheers,</div> <div dir="ltr" style="font-size:12pt; color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,"EmojiFont","Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols"> Klaus</div> <div dir="ltr" style="font-size:12pt; color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,"EmojiFont","Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols"> <br> </div> </div> </div> </div> </div> </body> </html>