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I try to connect a secondary display per DVI. It's an old TV with a native WSVG resolution. So my steps are
>cvt 1024 600
Modeline "1024x600_60.00" 49.00 1024 1072 1168 1312 600 603 613 624 -hsync +vsync
>xrandr --newmode "WSVGA" 49.00 1024 1072 1168 1312 600 603 613 624 -hsync +vsync
(no feedback, means okay)
>xrandr --addmode DVI-D-0 "WSVGA"
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: 45
Current serial number in output stream: 46
Of course xrandr cannot find the mode 1024x600 nor WSVGA. It reports:
Screen 0: minimum 8 x 8, current 3200 x 1080, maximum 32767 x 32767
DVI-D-0 connected 1280x720+1920+0 (normal left inverted right x axis y axis) 800mm x 450mm
1440x900 59.89 + 84.84
1920x1440 75.00
1920x1200 84.93
1920x1080 59.94 50.00 23.97 60.00 50.04
1680x1050 84.94
1600x1200 85.00
1280x1024 75.02
1280x960 85.00
1280x720 59.94* 50.00
1152x864 85.00
1024x768 75.03 70.07 60.00
800x600 75.00 60.32
720x576 50.00
720x480 59.94
640x480 75.00 72.81 59.94 59.93
HDMI-0 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 598mm x 336mm
...
Those resolutions work but look awkward. What can I do?
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$ cvt 1024 600
# 1024x600 59.85 Hz (CVT) hsync: 37.35 kHz; pclk: 49.00 MHz
Modeline "1024x600_60.00" 49.00 1024 1072 1168 1312 600 603 613 624 -hsync +vsync
$
The line with the # lists the hsync and pixel clock values needed for this mode.
One or both of them may be out of range for your screen.
In your xorg log look for lines like these :
[ 324.987] (II) RADEON(0): Serial No: FE30923001399
[ 324.987] (II) RADEON(0): Monitor name: Philips 240PW
[ 324.987] (II) RADEON(0): Ranges: V min: 48 V max: 85 Hz, H min: 24 H max: 94 kHz, PixClock max 175 MHz
The 3rd line has the values you want to know.
Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.
(A works at time B) && (time C > time B ) ≠ (A works at time C)
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Sounds reasonable, but the reported 600MHz would be more than what cvt reports (hsync: 37.35 kHz; pclk: 49.00 MHz). I suspect the connection via DVI to HDMI adapter and a cable to the Lenco TFT-1026 as the fly in the ointment. From the values I don't see anything what I can do.
[ 7.052] (--) NVIDIA(GPU-0): Ancor Communications Inc ASUS VX278 (DFP-1): connected
[ 7.052] (--) NVIDIA(GPU-0): Ancor Communications Inc ASUS VX278 (DFP-1): Internal TMDS
[ 7.052] (--) NVIDIA(GPU-0): Ancor Communications Inc ASUS VX278 (DFP-1): 600.0 MHz maximum pixel clock
[ 7.052] (--) NVIDIA(GPU-0):
[ 7.052] (--) NVIDIA(GPU-0): DFP-2: disconnected
[ 7.052] (--) NVIDIA(GPU-0): DFP-2: Internal DisplayPort
[ 7.052] (--) NVIDIA(GPU-0): DFP-2: 1440.0 MHz maximum pixel clock
...
[ 277.914] (--) NVIDIA(GPU-0): SPV Sunplus TV (DFP-0): connected
[ 277.914] (--) NVIDIA(GPU-0): SPV Sunplus TV (DFP-0): Internal TMDS
[ 277.914] (--) NVIDIA(GPU-0): SPV Sunplus TV (DFP-0): 600.0 MHz maximum pixel clock
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You should have mentioned you use nvidia drivers. I think you did everything right and this could just be a bug in them. When I last experimented with xrandr --addmode etc., I remember seeing similar errors with nvidia. It might work if you add your modelines through an Xorg config instead of doing it live with xrandr.
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I'd have to agree with Ropid on this one. I suppose nothing should prevent you from adding new modes to an output, maybe even modes that make no sense (I don't know if there are any basic sanity checks for parameters outside of what the output's hardware actually supports). The trouble should only come once you try to actually make use of the new mode(s) and the hardware refuses to work.
R00KIE
Tm90aGluZyB0byBzZWUgaGVyZSwgbW92ZSBhbG9uZy4K
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I try to connect a secondary display per DVI. It's an old TV with a native WSVG resolution.
That's the screen you want to get the Hsync / pixelclcock values for.
I do agree with ropid there's a good chance the nvidia driver doesn't play nice with xrandr but can work with this mode in a config file.
Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.
(A works at time B) && (time C > time B ) ≠ (A works at time C)
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Generated the xorg.conf with nvidia tool and modified the section for the TV as following
Section "Monitor"
Identifier "Monitor1"
VendorName "Unknown"
ModelName "SPV Sunplus TV"
Modeline "WSVGA" 49.00 1024 1072 1168 1312 600 603 613 624 -hsync +vsync
Option "PreferredMode" "WSVGA"
EndSection
No luck, though. Neither this mode is offered at the tool nor with xrandr. And I still cannot add the mode.
PS: For completeness the (unchanged) screen section
Section "Screen"
Identifier "Screen1"
Device "Device1"
Monitor "Monitor1"
DefaultDepth 24
Option "Stereo" "0"
Option "metamodes" "DVI-D-0: nvidia-auto-select +0+0"
Option "SLI" "Off"
Option "MultiGPU" "Off"
Option "BaseMosaic" "off"
SubSection "Display"
Depth 24
EndSubSection
EndSection
Last edited by Ocye (2017-05-31 18:16:39)
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Can you show what X and the nvidia driver are printing in /var/log/Xorg.0.log while using this xorg.conf experiment?
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Can you show what X and the nvidia driver are printing in /var/log/Xorg.0.log while using this xorg.conf experiment?
Nothing else than what I quoted in comment 3.
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Ocye, please post full xorg log.
Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.
(A works at time B) && (time C > time B ) ≠ (A works at time C)
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Ropid wrote:Can you show what X and the nvidia driver are printing in /var/log/Xorg.0.log while using this xorg.conf experiment?
Nothing else than what I quoted in comment 3.
What I'm interested in is, are the Screen and Monitor objects it actually uses in practice named the same as what's in your config? It might completely ignore what you've defined in your config and instead use a second set of objects built with settings it auto-detected. If this is happening, the identifiers that are mentioned in the log should show this. It should also print lines about what settings it applies to the different objects. That will be printed by the X server itself, while the messages in comment 3 are printed by the nvidia driver.
You could use more interesting identifiers in your config to makes it obvious what's defined by you and what the X server creates by itself. I mean instead of "Monitor1" use something like "My Sunplus TV", and instead of "Screen1" use "My X screen", instead of "Device1" use "My NVIDIA card".
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Removed the generated xorg.conf and updated my own with meaning full names:
Section "Monitor"
Identifier "Primary"
Option "PreferredMode" "1920x1080"
Option "Position" "0 0"
VendorName "ASUS"
ModelName "Ancor Communications Inc ASUS VX278"
HorizSync 24.0 - 83.0
VertRefresh 50.0 - 75.0
Option "DPMS"
EndSection
Section "Monitor"
Identifier "Secondary"
Modeline "1024x600" 49.00 1024 1072 1168 1312 600 603 613 624 -hsync +vsync
Option "PreferredMode" "1024x600"
Option "Position" "1920 0"
VendorName "Lenco"
ModelName "SPV Sunplus TV"
Modeline "WSVGA" 49.00 1024 1072 1168 1312 600 603 613 624 -hsync +vsync
Option "PreferredMode" "WSVGA"
EndSection
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce GTX 1060 6GB"
EndSection
Section "Device"
Identifier "Device1"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce GTX 1060 6GB"
BusID "PCI:1:0:0"
Screen 1
EndSection
Section "Screen"
Identifier "Main"
Device "Device0"
Monitor "Primary"
Option "Stereo" "0"
# Option "nvidiaXineramaInfoOrder" "DFP-1"
# Option "metamodes" "HDMI-0: nvidia-auto-select +0+0, DVI-D-0: 1024x600 +1920+0"
Option "SLI" "Off"
Option "MultiGPU" "Off"
Option "BaseMosaic" "off"
Option "DPI" "96 x 96"
EndSection
Section "Screen"
Identifier "Supp"
Device "Device1"
Monitor "Secondary"
Option "Stereo" "0"
# Option "metamodes" "DVI-D-0: nvidia-auto-select +0+0"
Option "SLI" "Off"
Option "MultiGPU" "Off"
Option "BaseMosaic" "off"
EndSection
which is half-way ignored (wrong screen placement, default resolution). XOrg reports
[ 3.504] (==) Log file: "/var/log/Xorg.0.log", Time: Fri Jun 2 13:52:58 2017
[ 3.506] (==) Using config directory: "/etc/X11/xorg.conf.d"
[ 3.506] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[ 3.507] (==) No Layout section. Using the first Screen section.
[ 3.507] (**) |-->Screen "Main" (0)
[ 3.507] (**) | |-->Monitor "Primary"
[ 3.507] (**) | |-->Device "Device0"
[ 3.507] (**) | |-->GPUDevice "Device1"
There is no line with HDMI-0 or DVI-D-0 in the X11 log but xrandr still reports these values.
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Try adding a "ServerLayout" section. It looks like this according to "man xorg.conf":
ServerLayout sections have the following format:
Section "ServerLayout"
Identifier "name"
Screen "screen-id"
...
InputDevice "idev-id"
...
options
...
EndSection
Each ServerLayout section must have an Identifier entry and at least one Screen entry.
There's also a "ServerFlags" section that you could add as well. Inside the ServerFlags section, this option here is available:
Option "DefaultServerLayout" "layout-id"
This specifies the default ServerLayout section to use in the absence of the -lay‐
out command line option.
EDIT: Also, I think you misunderstood what a "Screen" is. You want just one Screen. You do not want each monitor in its own Screen. This would mean that you can't move windows from one monitor to the other.
You need to somehow tie a "Monitor" section to the real monitor. Those "VendorName" and "ModelName" options are not used for that. They are just informational for you, same as the identifier. The xorg.conf man-page says this about how to tie stuff to a real monitor:
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"
EDIT2: About what that "outputname" should be, you should search for that in the Xorg log. For me here, it seems the names shown in xrandr are different. Now thinking about all of this, I'm guessing you can chop away nearly everything out of the config, and just keep a section for the nvidia device, and monitor section for the TV, something like this:
Section "Device"
Identifier "my nvidia gpu"
Driver "nvidia"
Option "Monitor-DFP-2" "my tv"
EndSection
Section "Monitor"
Identifier "my tv"
...
EndSection
Last edited by Ropid (2017-06-02 12:49:37)
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