Date: Wed, 28 Oct 2020 12:23:19 -0700 From: James Gritton <jamie@gritton.org> To: freebsd-arm@freebsd.org Subject: Re: 4K on RPI4? Message-ID: <78860f7f8fe0901fb7a83e2cfea8c439@gritton.org> In-Reply-To: <E78DE710-2EF9-4922-B494-BE57BBF61DB5@googlemail.com> References: <994e58050a2a20248b39c04996358078@gritton.org> <E78DE710-2EF9-4922-B494-BE57BBF61DB5@googlemail.com>
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On 2020-10-28 11:00, Klaus Cucinauomo wrote: >> Am 28.10.2020 um 05:10 schrieb James Gritton <jamie@gritton.org>: >> >> I'd like to move my desktop to FreeBSD for the first time in some >> years, and I have an 8GB RPI4 that's working nicely on CURRENT, except >> that Xorg insists that my resolution is 1920x1080. I've got a nice >> 60Hz 4K monitor, so it's kind of a shame to only have a quarter of the >> pixels I should have. >> >> How do I convince the X server (or the kernel, or whoever) that it's >> OK to give me some 4K output. And if I can get that going, my next >> question will be about 60Hz (when I specify it according to the RPI >> instructions, the kernel doesn't fully boot). But speed is icing on >> the cake - I just want those pixels! > > > https://www.raspberrypi.org/documentation/configuration/hdmi-config.md Already read and done - that's the very page I meant when I mentioned "the RPI instructions". I take it this has worked for you? Would you happen to have a configuration I could copy? I have used their recommendation for 2060p: hdmi_drive=1 hdmi_group=1 hdmi_mode=95 as well as putting my monitor timings directly into config.txt: hdmi_drive=1 hdmi_group=2 hdmi_mode=87 hdmi_timings=3840 1 176 88 296 2160 1 8 10 72 0 0 0 30 0 297000000 3 But in both cases, Xorg remains blithely ignorant of 4K. Also, I have already added lines to my Xorg config about the monitor timings, to no avail. They worked under Debian (on a RockPro64 I'm trying to replace), which is a similar version of Xorg. - Jamie
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