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Roman_Gruber
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Joined: 03 Oct 2006
Posts: 3846
Location: Austro Bavaria
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 Posted: Tue Mar 08, 2016 9:14 pm Post subject: exotic monitor, no specifications about resolutions |
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Hi
I got a hand on a second hand, out of the trash bin, lcd monitor.
For some reason I am unable to find any specifications about the supported resolutions.
I tried out a mobo lying around wiht a celeron D, which showed the inital bios screen, but turned in the Vsync overcapping screen when i tried to load an ubuntu disc, or a sysrescue disc.
The reason is obvious, as nvidia-settings on this laptop claims that the screen is a crt, and crts support much higher vsyncs as lcd.
next i plugged it in my laptop.
for a surprise it works.
My questions is:
Does anyone know the supported resolutions about this lcd-monitor?
Can I trust this section of the xorg log.
| Quote: | [ 819.780] (II) NVIDIA(0): Setting mode "DPY-1:nvidia-auto-select+1024+0,DPY-0:1024x768_60+0+0"
[ 819.860] (--) NVIDIA(GPU-0): VHT PV1710 (CRT-0): connected
[ 819.860] (--) NVIDIA(GPU-0): VHT PV1710 (CRT-0): 400.0 MHz maximum pixel clock
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because of the messages log
| Quote: | Mar 8 21:34:11 ASUS-G75VW kernel: nvidia-modeset: WARNING: GPU:0: Unable to read EDID for display device VGA-0
Mar 8 21:34:11 ASUS-G75VW kernel: nvidia-modeset: WARNING: GPU:0: Unable to read EDID for display device VGA-0
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Which means a broken edid of the screen. I exchanged the cable to test it, and it has the same behaviour. I do not have any more vga cables, only those two.
The label on the back says
VHTeck
Model MVS-17S
Sadly i could not find a manufacturer or any specification page.
I was a bit busy recently, I run a bit outdated kernel.
| Code: | uname -a
Linux ASUS-G75VW 4.4.1-gentoo_12-02-2016 #1 SMP Fri Feb 12 14:46:28 CET 2016 x86_64 Intel(R) Core(TM) i7-3610QM CPU @ 2.30GHz GenuineIntel GNU/Linux
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funny enough, it claims vga in, but has only vga port, but the plastics claims also dvi, but it lacks the dvi connector. i may open the montior and try to figure out how many parts are missing for dvi.
So there is no way to read out that edid from the montior right, because its vga, correct?
I may open the monitor and see which panel is inside, and from the panel i should hopefully can figure out which frequencies are supported. I hope the electronics and firmware were made in mind of hte panel to support everything the panel supports
--
and yes i could create a manual xorg-config but without proper specs, which i prefer first, it may be futile
--
edit
nope
| Code: | get-edid
This is read-edid version 3.0.2. Prepare for some fun.
Attempting to use i2c interface
Looks like no busses have an EDID. Sorry!
Attempting to use the classical VBE interface
Illegal instruction
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Buffoon
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Joined: 17 Jun 2015
Posts: 1369
Location: EU or US
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| Posted: Tue Mar 08, 2016 10:02 pm Post subject: |
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| I had a computer which was unable to pull EDID - with nvidia-drivers. Booted from liveCD and voila - EDID pulled with nouveau. My 2¢. |
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krinn
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Joined: 02 May 2003
Posts: 7470
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Ant P.
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Joined: 18 Apr 2009
Posts: 6920
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| Posted: Wed Mar 09, 2016 1:54 am Post subject: |
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It's a normal "feature" of the proprietary nvidia blob for EDID to not work correctly.
You can define a correct modeline manually - man 1 cvt. |
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Roman_Gruber
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Joined: 03 Oct 2006
Posts: 3846
Location: Austro Bavaria
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| Posted: Wed Mar 09, 2016 11:38 am Post subject: |
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Thanks everyone for the input.
My issue is, I have no glue which resolution is hardware wise supported.
I could disassemble the monitor and hope i find a label on the lcd screen and google that up.
I used a ruler with inch and mm markings and checked wikipedia. It seems its a 17 Inch 5:4 ratio screen. I was not aware such sizes did exists in the past.
I could rely on the software but that may work or not...
I have a sysrescuecd on my shelf, not the last one, but I think that will not matter when it is a few months old.
Krinn thanks for the big summary topic. Very well documented.
As of now I am updating my kernel and my grub.cfg ... (will not improve anything in this regard but i had to do it anyway soon).
on a price comparision webpage in my area, I saw most of those 17 inch 5:4 ratio lcd screens these days supports something like 1280x ???? and not the very old 1024x768 or what its used now. that looks like a fall back resolution which any screen should work ....
The resolution, colours seems to be quite usueable and the lcd mount is also a bit adjustable, so I try to get the best resolution out of it and will use it. |
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Roman_Gruber
Advocate
Joined: 03 Oct 2006
Posts: 3846
Location: Austro Bavaria
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| Posted: Wed Mar 09, 2016 12:32 pm Post subject: |
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I just updated my gentoo sources and my nvidia drivers
Than rerun nvidia-settings and i get
http://postimg.org/image/dgplfbh35/
Maybe the updated kernel fixed it. A few minutes before I had booted up sysrescue cd and ubuntu livecd to test out my monitor. Maybe the bios has remembered the data or the updated gentoo sources and "reinstalled" nvidia-drviers solved it
| Code: | sys-kernel/gentoo-sources-4.4.4
x11-drivers/nvidia-drivers-361.28-r2
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output of sysrescuecd from october 2015
| Code: | cat /boot/lcd_data
xrandr --verbose
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192
LVDS-1 connected 1920x1080+0+0 (0x68) normal (normal left inverted right x axis y axis) 382mm x 215mm
Identifier: 0x63
Timestamp: 92912
Subpixel: unknown
Gamma: 1.0:1.0:1.0
Brightness: 1.0
Clones:
CRTC: 0
CRTCs: 0 1 2 3
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
EDID:
00ffffffffffff000daf201700000000
021501049026157802ed95a3544c9c26
0f505400000001010101010101010101
010101010101e13680ae703826403423
36007ed71000001a1d2480a070381f40
302035007ed71000001a000000fe0048
4339474b803137334847450a00000000
000041319e0000000002010a202000f3
dithering depth: auto
supported: auto, 6 bpc, 8 bpc
dithering mode: auto
supported: auto, off, static 2x2, dynamic 2x2, temporal
scaling mode: Full
supported: None, Full, Center, Full aspect
color vibrance: 150
range: (0, 200)
vibrant hue: 90
range: (0, 180)
1920x1080 (0x68) 140.490MHz +HSync -VSync *current +preferred
h: width 1920 start 1972 end 2007 total 2094 skew 0 clock 67.09KHz
v: height 1080 start 1083 end 1089 total 1118 clock 60.01Hz
1920x1080 (0x69) 173.000MHz -HSync +VSync
h: width 1920 start 2048 end 2248 total 2576 skew 0 clock 67.16KHz
v: height 1080 start 1083 end 1088 total 1120 clock 59.96Hz
1920x1080 (0x6a) 92.450MHz +HSync -VSync
h: width 1920 start 1968 end 2000 total 2080 skew 0 clock 44.45KHz
v: height 1080 start 1083 end 1088 total 1111 clock 40.01Hz
1680x1050 (0x6b) 146.250MHz -HSync +VSync
h: width 1680 start 1784 end 1960 total 2240 skew 0 clock 65.29KHz
v: height 1050 start 1053 end 1059 total 1089 clock 59.95Hz
1400x1050 (0x6c) 121.750MHz -HSync +VSync
h: width 1400 start 1488 end 1632 total 1864 skew 0 clock 65.32KHz
v: height 1050 start 1053 end 1057 total 1089 clock 59.98Hz
1280x1024 (0x6d) 109.000MHz -HSync +VSync
h: width 1280 start 1368 end 1496 total 1712 skew 0 clock 63.67KHz
v: height 1024 start 1027 end 1034 total 1063 clock 59.89Hz
1280x960 (0x6e) 101.250MHz -HSync +VSync
h: width 1280 start 1360 end 1488 total 1696 skew 0 clock 59.70KHz
v: height 960 start 963 end 967 total 996 clock 59.94Hz
1152x864 (0x6f) 81.750MHz -HSync +VSync
h: width 1152 start 1216 end 1336 total 1520 skew 0 clock 53.78KHz
v: height 864 start 867 end 871 total 897 clock 59.96Hz
1024x768 (0x70) 63.500MHz -HSync +VSync
h: width 1024 start 1072 end 1176 total 1328 skew 0 clock 47.82KHz
v: height 768 start 771 end 775 total 798 clock 59.92Hz
800x600 (0x71) 38.250MHz -HSync +VSync
h: width 800 start 832 end 912 total 1024 skew 0 clock 37.35KHz
v: height 600 start 603 end 607 total 624 clock 59.86Hz
640x480 (0x72) 23.750MHz -HSync +VSync
h: width 640 start 664 end 720 total 800 skew 0 clock 29.69KHz
v: height 480 start 483 end 487 total 500 clock 59.38Hz
720x400 (0x73) 22.250MHz -HSync +VSync
h: width 720 start 744 end 808 total 896 skew 0 clock 24.83KHz
v: height 400 start 403 end 413 total 417 clock 59.55Hz
640x400 (0x74) 20.000MHz -HSync +VSync
h: width 640 start 664 end 720 total 800 skew 0 clock 25.00KHz
v: height 400 start 403 end 409 total 417 clock 59.95Hz
640x350 (0x75) 17.500MHz -HSync +VSync
h: width 640 start 664 end 720 total 800 skew 0 clock 21.88KHz
v: height 350 start 353 end 363 total 366 clock 59.77Hz
VGA-1 connected (normal left inverted right x axis y axis)
Identifier: 0x64
Timestamp: 92912
Subpixel: unknown
Clones:
CRTCs: 0 1 2 3
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
EDID:
00ffffffffffff005914dddd01000000
040d010318221bb9ea9119a255499827
10484cbfef003140314a454a614c8180
818a818c8140ea240060410028303060
130036e61000001e000000ff00303233
3530303030303030310a000000fd0032
4b1e520e000a202020202020000000fc
0050563137313020202020202020007f
scaling mode: None
supported: None, Full, Center, Full aspect
color vibrance: 150
range: (0, 200)
vibrant hue: 90
range: (0, 180)
1024x768 (0x91) 94.500MHz +HSync +VSync +preferred
h: width 1024 start 1072 end 1168 total 1376 skew 0 clock 68.68KHz
v: height 768 start 769 end 772 total 808 clock 85.00Hz
1280x1024 (0x92) 135.000MHz +HSync +VSync
h: width 1280 start 1296 end 1440 total 1688 skew 0 clock 79.98KHz
v: height 1024 start 1025 end 1028 total 1066 clock 75.02Hz
1280x1024 (0x93) 132.840MHz -HSync +VSync
h: width 1280 start 1368 end 1504 total 1728 skew 0 clock 76.88KHz
v: height 1024 start 1025 end 1028 total 1067 clock 72.05Hz
1280x1024 (0x94) 128.946MHz -HSync +VSync
h: width 1280 start 1368 end 1504 total 1728 skew 0 clock 74.62KHz
v: height 1024 start 1025 end 1028 total 1066 clock 70.00Hz
1280x1024 (0x95) 108.000MHz +HSync +VSync
h: width 1280 start 1328 end 1440 total 1688 skew 0 clock 63.98KHz
v: height 1024 start 1025 end 1028 total 1066 clock 60.02Hz
1280x960 (0x96) 108.000MHz +HSync +VSync
h: width 1280 start 1376 end 1488 total 1800 skew 0 clock 60.00KHz
v: height 960 start 961 end 964 total 1000 clock 60.00Hz
1024x768 (0x97) 78.800MHz +HSync +VSync
h: width 1024 start 1040 end 1136 total 1312 skew 0 clock 60.06KHz
v: height 768 start 769 end 772 total 800 clock 75.08Hz
1024x768 (0x98) 78.438MHz -HSync +VSync
h: width 1024 start 1080 end 1192 total 1360 skew 0 clock 57.67KHz
v: height 768 start 769 end 772 total 801 clock 72.00Hz
1024x768 (0x99) 75.000MHz -HSync -VSync
h: width 1024 start 1048 end 1184 total 1328 skew 0 clock 56.48KHz
v: height 768 start 771 end 777 total 806 clock 70.07Hz
1024x768 (0x9a) 65.000MHz -HSync -VSync
h: width 1024 start 1048 end 1184 total 1344 skew 0 clock 48.36KHz
v: height 768 start 771 end 777 total 806 clock 60.00Hz
832x624 (0x9b) 57.284MHz -HSync -VSync
h: width 832 start 864 end 928 total 1152 skew 0 clock 49.73KHz
v: height 624 start 625 end 628 total 667 clock 74.55Hz
800x600 (0x9c) 50.000MHz +HSync +VSync
h: width 800 start 856 end 976 total 1040 skew 0 clock 48.08KHz
v: height 600 start 637 end 643 total 666 clock 72.19Hz
800x600 (0x9d) 49.500MHz +HSync +VSync
h: width 800 start 816 end 896 total 1056 skew 0 clock 46.88KHz
v: height 600 start 601 end 604 total 625 clock 75.00Hz
800x600 (0x9e) 45.504MHz -HSync +VSync
h: width 800 start 840 end 920 total 1040 skew 0 clock 43.75KHz
v: height 600 start 601 end 604 total 625 clock 70.01Hz
800x600 (0x9f) 40.000MHz +HSync +VSync
h: width 800 start 840 end 968 total 1056 skew 0 clock 37.88KHz
v: height 600 start 601 end 605 total 628 clock 60.32Hz
800x600 (0xa0) 36.000MHz +HSync +VSync
h: width 800 start 824 end 896 total 1024 skew 0 clock 35.16KHz
v: height 600 start 601 end 603 total 625 clock 56.25Hz
640x480 (0xa1) 31.500MHz -HSync -VSync
h: width 640 start 656 end 720 total 840 skew 0 clock 37.50KHz
v: height 480 start 481 end 484 total 500 clock 75.00Hz
640x480 (0xa2) 31.500MHz -HSync -VSync
h: width 640 start 664 end 704 total 832 skew 0 clock 37.86KHz
v: height 480 start 489 end 491 total 520 clock 72.81Hz
640x480 (0xa3) 30.240MHz -HSync -VSync
h: width 640 start 704 end 768 total 864 skew 0 clock 35.00KHz
v: height 480 start 483 end 486 total 525 clock 66.67Hz
640x480 (0xa4) 28.574MHz -HSync +VSync
h: width 640 start 664 end 728 total 816 skew 0 clock 35.02KHz
v: height 480 start 481 end 484 total 500 clock 70.03Hz
640x480 (0xa5) 25.200MHz -HSync -VSync
h: width 640 start 656 end 752 total 800 skew 0 clock 31.50KHz
v: height 480 start 490 end 492 total 525 clock 60.00Hz
640x480 (0xa6) 25.175MHz -HSync -VSync
h: width 640 start 656 end 752 total 800 skew 0 clock 31.47KHz
v: height 480 start 489 end 492 total 525 clock 59.94Hz
720x400 (0xa7) 28.320MHz -HSync +VSync
h: width 720 start 738 end 846 total 900 skew 0 clock 31.47KHz
v: height 400 start 412 end 414 total 449 clock 70.08Hz
HDMI-1 disconnected (normal left inverted right x axis y axis)
Identifier: 0x65
Timestamp: 92912
Subpixel: unknown
Clones:
CRTCs: 0 1 2 3
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
dithering depth: auto
supported: auto, 6 bpc, 8 bpc
dithering mode: auto
supported: auto, off, static 2x2, dynamic 2x2, temporal
scaling mode: Full
supported: None, Full, Center, Full aspect
color vibrance: 150
range: (0, 200)
vibrant hue: 90
range: (0, 180)
underscan vborder: 0
range: (0, 128)
underscan hborder: 0
range: (0, 128)
underscan: off
supported: auto, off, on
DP-1 disconnected (normal left inverted right x axis y axis)
Identifier: 0x66
Timestamp: 92912
Subpixel: unknown
Clones:
CRTCs: 0 1 2 3
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
dithering depth: auto
supported: auto, 6 bpc, 8 bpc
dithering mode: auto
supported: auto, off, static 2x2, dynamic 2x2, temporal
scaling mode: Full
supported: None, Full, Center, Full aspect
color vibrance: 150
range: (0, 200)
vibrant hue: 90
range: (0, 180)
underscan vborder: 0
range: (0, 128)
underscan hborder: 0
range: (0, 128)
underscan: off
supported: auto, off, on
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output of ubuntu livecd, installer dvd, from october 2015
it uses systemd and nouveau
| Code: | cat /boot/ubuntu_xrandr
xrandr
Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 8192 x 8192
LVDS-1 connected primary 1280x1024+0+0 (normal left inverted right x axis y axis) 382mm x 215mm
1920x1080 60.0 + 60.0 40.0
1680x1050 60.0
1400x1050 60.0
1280x1024 59.9*
1280x960 59.9
1152x864 60.0
1024x768 59.9
800x600 59.9
640x480 59.4
720x400 59.6
640x400 60.0
640x350 59.8
VGA-1 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 310mm x 230mm
1024x768 85.0 + 75.1 72.0 70.1 60.0
1280x1024 75.0* 72.0 70.0 60.0
1280x960 60.0
832x624 74.6
800x600 72.2 75.0 70.0 60.3 56.2
640x480 75.0 72.8 66.7 70.0 60.0 59.9
720x400 70.1
HDMI-1 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
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No idea if it was an older kernel.
when i move my mouse over the screen picture of nivdia-settings it claims
1280x1024 @75 Hz
I saw this resolution on a price comparision site for similar devices. I think these values are correct
relevant section of splat nvidia-drivers. So it was the update of gentoo-sources probably which fixed it
| Code: | * x11-drivers/nvidia-drivers-361.28-r2
Emerged at: Fr Feb 19 20:58:40 2016
Build time: 1 minute, and 48 seconds
Emerged at: Mi M�r 9 13:19:07 2016
Build time: 2 minutes, and 16 seconds
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I will see in the next few days / weeks if it works flawless and than close this topic. |
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Roman_Gruber
Advocate
Joined: 03 Oct 2006
Posts: 3846
Location: Austro Bavaria
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| Posted: Wed Mar 09, 2016 12:42 pm Post subject: |
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| Code: | xrandr
Screen 0: minimum 8 x 8, current 3200 x 1080, maximum 16384 x 16384
VGA-0 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 340mm x 270mm
1024x768 85.00 + 75.03 72.00 70.07 60.00
1280x1024 75.02* 72.00 70.00 60.02
1280x960 60.00
800x600 75.00 72.19 70.00 60.32 56.25
640x480 75.00 72.81 70.00 59.95 59.94
LVDS-0 connected primary 1920x1080+1280+0 (normal left inverted right x axis y axis) 382mm x 215mm
1920x1080 60.01*+ 40.01
DP-0 disconnected (normal left inverted right x axis y axis)
HDMI-0 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
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