On Mon, Jan 25, 2021 at 2:27 AM al3xu5 / dotcommon <dotcom...@autistici.org> wrote: > > Sun, 24 Jan 2021 19:59:19 -0600 - o1bigtenor <o1bigte...@gmail.com>: > > > Greetings > > > > (Asking this here as so far I've seen some seriously skilled folks > > connecting in!) > > > > I've been working on getting a HiSense 50" TV (3840x2160_30) working > > on a Nvidia GTX1050 Ti graphics card. I have a second graphics card > > (Nvidia GT (IIRC) 570) with a present stable of 4 -1920x1080 monitors. > > I am running Nouveau rather than proprietary Nvidia software and get > > to use xrandr to set up my graphics system after every boot but > > although it took me a while to learn how to do this setup its pretty > > quick now. > > > > Part of the 'fun' in wanting to add the 3840x2160_30 monitor is that > > EDID has become a more than somewhat 'challenging' system. Enough so > > that I was able to find this: > > https://www.kernel.org/doc/html/v5.6/driver-api/edid.html > > > > Creating this 'custom' EDID is a long ways from my wheelhouse - - - I > > have spend some time today trying to find some of the stuff indicated > > on that page - - - - can't find anything (maybe also a good thing!). I > > am going to attach (hopefully the list accepts attachments) 2 files > > which give enough information so that someone with the requisite > > skills could create this 'custom' EDID that I need so that I could > > then use xrandr to get this monitor working. Is there someone who > > might be able to do this? (I think doing it might be a lot less time > > consuming that guiding me through the doing of it - - - especially as > > I have essentially zero programming skills) > > > > Please? > > > > TIA > > > > Hi > > I had the same problem with a Panasonic Viera TV. Here below the way I > have solved. > > > You need a valid right modeline for your tv/monitor with the desired > resolution/refresh. > > You have the hardware specs of your tv/monitor, and its EDID file you > attached which has: > > DTD 1: 3840x2160 30.000 Hz 16:9 67.500 kHz 297.000 MHz (1872 mm > x 1053 mm) Hfront 176 Hsync 88 Hback 296 Hpol P > Vfront 8 Vsync 10 Vback 72 Vpol P > > Using these informations you should be able to find the modeline you need. > > See:
This looks like exactly what I've been scouring the web for - - - but - - - there are some issues with some of the following. > > Modeline Database - MythTV Official Wiki > https://www.mythtv.org/wiki/Modeline_Database Nothing on 4k or wide format TVs/monitors. > > Working with Modelines - MythTV Official Wiki > https://www.mythtv.org/wiki/Working_with_Modelines > > * Modeline Calculator > https://arachnoid.com/modelines/ this seems to be very much like cvt > > videogen > http://www.dynaweb.hu/opensource/videogen/ > > Debian -- Package Search Results -- videogen > https://packages.debian.org/cgi-bin/search_packages.pl?keywords=videogen&searchon=names&subword=1&version=all&release=all > > > Your modeline will be something similar to: > > "3840x2160_30.00" 339.57 3840 4080 4496 5152 2160 2161 2164 2197 -HSync > +Vsync > 3840x2160 30.000 Hz 16:9 67.500 kHz 297.000 MHz (1150 mm x 650 mm) Hfront 176 Hsync 88 Hback 296 Hpol P Vfront 8 Vsync 10 Vback 72 Vpol P It seems to me that the 297.000 MHz (different than 339.57 MHz) is important. > (Be very careful because using an incorrect modeline may DAMAGE the > display.) > > > Once you have the right modeline, you need to pass it to xrandr for each > session. > > If you are using a DM (e.g lightdm), you can configure it to run a script > when starting each session. I have a cheat sheet and just enter the 6 commands (on my existing 2 card 4 monitor setup) to get the second card recognized and working. > > Here is how mine is (you should change it accordingly to your tv/monitor > model and modeline): ~~~ > #!/bin/bash > > # ## DISPLAY SETUP > # Modeline for Panasonic Viera 32" HDMI LCD TV (model: TX-32LX52F) > xrandr --newmode "1216x684_60" 74.160 1216 1356 1396 1648 684 707 712 750 > +hsync +vsync xrandr --addmode HDMI-1 "1216x684_60" > xrandr --output HDMI-1 --mode "1216x684_60" I am presently stuck trying to get 'videogen' working. Can see everything in the directory but using either root or user I get the same error message: $ videogen could not open configuration file "~/.videogen" (errno=2) +--------------------------------------------------------------+ | | | videogen 0.33 simple XFree86 Modeline calculator | | | | by Szabolcs Rumi, (c) 1997 - 2003 | | THIS PROGRAM COMES WITH ABSOLUTELY NO WARRANTY | | for details see the GNU General Public License (GPLv2) | | | +--------------------------------------------------------------+ error: no modes (resolutions) have been specified Suggestion(s) on how to get over this hurdle? TIA _______________________________________________ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
