<div dir="ltr">Thanks, Jani, here's the bug report: <a href="https://gitlab.freedesktop.org/drm/intel/-/issues/4531">https://gitlab.freedesktop.org/drm/intel/-/issues/4531</a></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Nov 14, 2021 at 2:50 AM Saarinen, Jani <<a href="mailto:jani.saarinen@intel.com">jani.saarinen@intel.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi Bryan. <br>
Can you file new bug: <a href="https://gitlab.freedesktop.org/drm/intel/-/wikis/How-to-file-i915-bugs" rel="noreferrer" target="_blank">https://gitlab.freedesktop.org/drm/intel/-/wikis/How-to-file-i915-bugs</a> <br>
<br>
Br,<br>
<br>
Jani Saarinen<br>
Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo<br>
<br>
<br>
<br>
> -----Original Message-----<br>
> From: Intel-gfx <<a href="mailto:intel-gfx-bounces@lists.freedesktop.org" target="_blank">intel-gfx-bounces@lists.freedesktop.org</a>> On Behalf Of Bryan<br>
> O'Sullivan<br>
> Sent: sunnuntai 14. marraskuuta 2021 6.36<br>
> To: <a href="mailto:intel-gfx@lists.freedesktop.org" target="_blank">intel-gfx@lists.freedesktop.org</a><br>
> Subject: [Intel-gfx] Can't drive 4K monitor at full resolution over DP<br>
> <br>
> I have a new Framework laptop running Fedora 35, stock kernel package 5.14.16-<br>
> 301, BDB version 240.<br>
> <br>
> My CPU/GPU is an 11th gen i7-1165G7, connected via a USB-C-to-DP cable to a<br>
> 2014-era Dell P2715Q monitor that supports 3840x2160@60Hz over DP (my Mac<br>
> drives it this way just fine).<br>
> <br>
> With i915 debugging enabled, I can see the 4K modeline being detected and<br>
> discarded because CLOCK_HIGH. Here's some debug output in a paste as it's longish<br>
> and verbose: <a href="https://pastebin.com/reGcmxYF" rel="noreferrer" target="_blank">https://pastebin.com/reGcmxYF</a><br>
> <br>
> Line 17 of that paste seems weird, where the value of everything is zero for some<br>
> reason?<br>
> <br>
> Here's some output from the monitor-edid tool. If there's any more information I<br>
> can supply to track this down, I'm happy to do what I can.<br>
> <br>
> Name: DELL P2715Q<br>
> EISA ID: DEL40bd<br>
> EDID version: 1.4<br>
> EDID extension blocks: 1<br>
> Screen size: 59.7 cm x 33.6 cm (26.97 inches, aspect ratio 16/9 = 1.78)<br>
> Gamma: 2.2<br>
> Digital signal<br>
> Max video bandwidth: 540 MHz<br>
> <br>
> HorizSync 31-140<br>
> VertRefresh 29-75<br>
> <br>
> # Monitor preferred modeline (60.0 Hz vsync, 133.3 kHz hsync, ratio 16/9, 163<br>
> dpi)<br>
> ModeLine "3840x2160" 533.25 3840 3888 3920 4000 2160 2163 2168 2222 -<br>
> hsync +vsync<br>
> <br>
> # Monitor supported CEA modeline (60.0 Hz vsync, 67.5 kHz hsync, ratio 16/9,<br>
> 81 dpi)<br>
> ModeLine "1920x1080" 148.5 1920 2008 2052 2200 1080 1084 1089 1125<br>
> +hsync +vsync<br>
<br>
</blockquote></div>