Hi,
Tested on Ubuntu (various versions and flawors).
Running an Optoma UHD35stx projector capable of 239.76 (240) hz the option for 240hz disappear if drivers later than 510 is used.
Hence it’s not possible to get it working with 40xx series card.
Windows shows the resolution under “PC timing”.
I am interested in possible workarounds if anyone know one.
xrandr --addmode gives BadMatch when I try to add the missing refreshrate.
Attached is bug logs for 3 non-functioning setups (RTX2080 and 4070TI with too new drivers)
Then one working log with RTX2080 with 510 driver.
4LOGS.zip (1.6 MB)
Looking at details, on the working setup the Extension Block Detailed Timings looks like this;
Extension Block Detailed Timings:
1920 x 1080 @ 120 Hz
Pixel Clock : 297.00 MHz
HRes, HSyncStart : 1920, 2008
HSyncEnd, HTotal : 2052, 2200
VRes, VSyncStart : 1080, 1084
VSyncEnd, VTotal : 1089, 1125
H/V Polarity : +/+
Image Size : 800 mm x 450 mm
RGB 444 bpcs : 8, 10, 12
YUV 444 bpcs : 8, 10, 12
YUV 422 bpcs : 8, 10, 12
1366 x 768 @ 60 Hz
Pixel Clock : 85.50 MHz
HRes, HSyncStart : 1366, 1436
HSyncEnd, HTotal : 1579, 1792
VRes, VSyncStart : 768, 771
VSyncEnd, VTotal : 774, 798
H/V Polarity : +/+
RGB 444 bpcs : 8, 10, 12
YUV 444 bpcs : 8, 10, 12
YUV 422 bpcs : 8, 10, 12
1920 x 1080 @ 240 Hz
** Pixel Clock : 594.27 MHz**
** HRes, HSyncStart : 1920, 1952**
** HSyncEnd, HTotal : 2000, 2040**
** VRes, VSyncStart : 1080, 1112**
** VSyncEnd, VTotal : 1160, 1215**
** H/V Polarity : +/+**
** RGB 444 bpcs : 8, 10, 12**
** YUV 444 bpcs : 8, 10, 12**
** YUV 422 bpcs : 8, 10, 12**
And when updating driver to 515 the 240 option is missing.
Even though the raw EDID is the same.