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]cvt 2048 1536 85
# 2048x1536 84.94 Hz (CVT 3.15M3) hsync: 137.18 kHz; pclk: 388.50 MHz
Modeline "2048x1536_85.00" 388.50 2048 2216 2440 2832 1536 1539 1543 1615 -hsync +vsync
]xrandr --newmode "2048x1536_85.00" 388.50 2048 2216 2440 2832 1536 1539 1543 1615 -hsync +vsync
]xrandr --addmode DVI-I-0 2048x1536_85.00
X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 140 (RANDR)
Minor opcode of failed request: 18 (RRAddOutputMode)
Serial number of failed request: 47
Current serial number in output stream: 48
`gtf` doesn't work either.
Here's my attempted fix:
]vim /usr/share/X11/xorg.conf.d/00-modecrt.conf
Section "Monitor"
Identifier "CRT-0" # also tried "DVI-I-0"
HorizSync 30.0-140.0
VertRefresh 59.0-160.0
DisplaySize 2048 1536
# the modes i want
Mode "qxga86"
DotClock 393.25
HTimings 2048 2216 2440 2832
VTimings 1536 1539 1543 1616
Flags "-HSync" "+VSync"
EndMode
Mode "xga160"
DotClock 190.25
HTimings 1024 1112 1216 1408
VTimings 768 771 775 846
Flags "-HSync" "+VSync"
EndMode
# ive tried without and without these modeline/option lines, still broken
Modeline "qxga" 393.25 2048 2216 2440 2832 1536 1539 1543 1616 -hsync +vsync
Option "Rotate" "normal"
Option "PreferredMode" "qxga" # put qxga, qxga86 or xga, none works
EndSection
# ive also tried without these section screen and device, no difference
Section "Screen"
Identifier "Screen 0"
Device "Configured Video Device"
SubSection "Display"
#Virtual 2048 1536 # tried to use this fix but it makes x not start
EndSubSection
EndSection
Section "Device"
Identifier "Configured Video Device"
EndSection
# this really should have fixed it but its like its being ignored
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
Option "ModeValidation" "AllowNonEdidModes"
EndSection
Even with all sorts of additions to xorg.conf, it still refuses to recognize any custom resolutions added through the conf or using `xrandr --addmode`. Adding / setting modes for `DP-0` doesn't work either. Disabling `DP-0` doesn't fix anything for `DVI-I-0`.
Here's `xrandr --query`:
Screen 0: minimum 8 x 8, current 2944 x 1080, maximum 16384 x 16384
DVI-I-0 connected primary 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
1024x768 60.00*+
1600x900 59.82
1400x900 59.88
1368x768 59.88 59.85
1280x800 59.91 59.81
1280x720 59.86 59.74
1024x576 59.90 59.82
960x540 59.82 59.63
864x486 59.92 59.57
800x600 72.19 60.32 56.25
800x450 59.82
700x450 59.88
684x384 59.88 59.85
640x480 59.94
640x400 59.98 59.88
640x360 59.86 59.83
512x384 60.00
512x288 60.00 59.92
480x270 59.82 59.63
432x243 59.92 59.57
400x300 72.19
320x240 60.05
DVI-I-1 disconnected (normal left inverted right x axis y axis)
HDMI-0 disconnected (normal left inverted right x axis y axis)
DP-0 connected 1920x1080+1024+0 (normal left inverted right x axis y axis) 531mm x 299mm
1920x1080 60.00*+ 144.00 119.98 99.93 84.90 59.94 50.00
1680x1050 59.95
1440x900 59.89
1280x1024 75.02 60.02
1280x960 60.00
1280x800 59.81
1280x720 60.00 59.94 50.00
1152x864 75.00
1024x768 75.03 70.07 60.00
800x600 75.00 72.19 60.32 56.25
720x576 50.00
720x480 59.94
640x480 75.00 59.94 59.93
DP-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 disconnected (normal left inverted right x axis y axis)
DP-4 disconnected (normal left inverted right x axis y axis)
DP-5 disconnected (normal left inverted right x axis y axis)
2048x1536_85.00 (0x218) 388.500MHz -HSync +VSync
h: width 2048 start 2216 end 2440 total 2832 skew 0 clock 137.18KHz
v: height 1536 start 1539 end 1543 total 1615 clock 84.94Hz
GTX 980 Ti, out DVI-I and DisplayPort.
Nothing's working, how do I hard force the modes I want? I don't want to be limited by what the drivers "think" the monitors can handle. The modes I wish to use aren't standard and wouldn't be listed in an EDID, but are within scanning range, so correcting any EDID problems would likely not help.
Last edited by bitmask (2019-02-12 02:45:08)
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That "Identifier" in your config file in the "Monitor" section, that name you use there is just for you. It has nothing to do with the actual ports on the card. You can name things any way you like, it just has to be something unique.
I'm not sure how to tie a monitor section to a real output port. The xorg.conf man-page explains something in a part named "MONITOR SECTION". You can jump to exactly that part of the man-page by typing "/^MON". There is one paragraph that says this here:
With RandR 1.2-enabled drivers, monitor sections may be tied to specific outputs of the
video card. Using the name of the output defined by the video driver plus the identifier
of a monitor section, one associates a monitor section with an output by adding an option
to the Device section in the following format:
Option "Monitor-outputname" "monitorsection"
(for example, Option "Monitor-VGA" "VGA monitor" for a VGA output)
This would be something I would try. For the config file you showed earlier, it would mean adding this here to your Device section:
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
Option "ModeValidation" "AllowNonEdidModes"
Option "Monitor-DVI-I-0" "CRT-0"
EndSection
This "CRT-0" name is the Identifier you used in that Monitor section you've written.
In that config you showed earlier, I would remove that Screen section and that empty Device you have. About the Device section with the Identifier "Device0" where you configure the nvidia driver, you have to make sure that there is no other config file with a similar Device section. Perhaps do this to see if there's a different one:
$ grep -r nvidia /etc/X11
Look at the Xorg log file closely after starting X. The Xorg server will print the names it uses to identify stuff, and it will print which section from a config file it sees and applies to stuff.
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@bitmaks: Nvidia doesn't allow arbitrary resolutions with xrandr 1.2. Instead, you need to use their ViewPortIn/ViewPortOut stuff. Search for that in the Nvidia documentation here: https://download.nvidia.com/XFree86/Lin … nview.html
@Ropid: Actually, the Identifier does matter when you have a minimal config without any "Device" sections, only "Monitor" sections. For example, I have a stupid display that's 1366x768, but lists 1360x768 as it's default mode, so I use this minimal config:
Section "Monitor"
Identifier "DP-1"
Option "PreferredMode" "1366x768"
EndSection
In this case, the Identifier must be set to the output I'm configuring. I could instead do this:
Section "Device"
Identifier "something"
Driver "modesetting"
Option "Monitor-DP-1" "blah"
EndSection
Section "Monitor"
Identifier "blah"
Option "PreferredMode" "1366x768"
EndSection
That's what's described in the manpage section you quoted. But why bother, the first config is smaller and works identically.
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