Find the answer to your Linux question:
Results 1 to 2 of 2
Enjoy an ad free experience by logging in. Not a member yet? Register.
  1. #1

    xorg conf? VGA on splitter cable not recognizing max resolution


    Hi all,

    I am running SUSE Enterprise Thin Client 11 on a WYSE thin client. I am trying to run a widescreen monitor-dvi along with a regular touchscreen-vga. Both are connected using a WYSE compatible splitter that is DVI to one DVI out and one vga out.

    The issue is that whichever is connected to the vga portion of the splitter, the proper resolutions will not be offered. I believe it maxes out at 1024x768.

    My xorg conf section:
    Code:
    Section "Monitor"
    	Identifier	"CRT"
    	Option		"Enable"	"true"
    #@RES_MON1@	UseModes	"Modes"
    EndSection
    
    Section "Monitor"
    	Identifier	"LCD"
    	Option		"Disable"	"True"
    EndSection
    
    Section "Monitor"
    	Identifier	"DVI"
    	Option		"Enable"	"true"
    	Option		"Type"		"External"
    	Option		"DIPort"	"DVP1"
    #	Option		"PreferredMode" "1280x1024"
    #@RES_MON1@	UseModes	"Modes"
    EndSection
    
    Section "Screen"
    	Identifier	"Screen0"
    	Device		"Card0"
    	DefaultDepth	24
    	SubSection "Display"
    #		Viewport   0 0
    		# No rotation, so allocate only necessary buffer
    		Virtual 3840 3840
    		Depth	24
    #@RES_MON1@	Modes	@RES_MON1_RES@
    	EndSubSection
    EndSection
    
    Section "Extensions"
    	Option		"Composite"	"Enable"
    EndSection
    
    Section "Modes"
    	Identifier	"Modes"
    	# 800x600 @ 60.00 Hz (GTF) hsync: 37.32 kHz; pclk: 38.22 MHz
    	Modeline	"800x600_60"	38.22  800 832 912 1024  600 601 604 622  -HSync +Vsync
    	# 800x600 @ 72.00 Hz (GTF) hsync: 45.07 kHz; pclk: 46.87 MHz
    	Modeline	"800x600_72"	46.87  800 840 920 1040  600 601 604 626  -HSync +Vsync
    	# 800x600 @ 75.00 Hz (GTF) hsync: 47.02 kHz; pclk: 48.91 MHz
     	Modeline	"800x600_75"	48.91  800 840 920 1040  600 601 604 627  -HSync +Vsync
    	# 800x600 @ 85.00 Hz (GTF) hsync: 53.55 kHz; pclk: 56.55 MHz
    	Modeline	"800x600_85"	56.55  800 840 928 1056  600 601 604 630  -HSync +Vsync
    	# 800x600 @ 90.00 Hz (GTF) hsync: 56.88 kHz; pclk: 60.07 MHz
    	Modeline	"800x600_90"	60.07  800 840 928 1056  600 601 604 632  -HSync +Vsync
    	# 800x600 @ 100.00 Hz (GTF) hsync: 63.60 kHz; pclk: 68.18 MHz
    	Modeline	"800x600_100"	68.18  800 848 936 1072  600 601 604 636  -HSync +Vsync
    	# 1024x768 @ 60.00 Hz (GTF) hsync: 47.70 kHz; pclk: 64.11 MHz
    	Modeline	"1024x768_60"	64.11  1024 1080 1184 1344  768 769 772 795  -HSync +Vsync
    	# 1024x768 @ 72.00 Hz (GTF) hsync: 57.67 kHz; pclk: 78.43 MHz
    	Modeline	"1024x768_72"	78.43  1024 1080 1192 1360  768 769 772 801  -HSync +Vsync
    	# 1024x768 @ 75.00 Hz (GTF) hsync: 60.15 kHz; pclk: 81.80 MHz
    	Modeline	"1024x768_75"	81.80  1024 1080 1192 1360  768 769 772 802  -HSync +Vsync
    	# 1024x768 @ 85.00 Hz (GTF) hsync: 68.60 kHz; pclk: 94.39 MHz
    	Modeline	"1024x768_85"	94.39  1024 1088 1200 1376  768 769 772 807  -HSync +Vsync
    	# 1024x768 @ 90.00 Hz (GTF) hsync: 72.81 kHz; pclk: 100.19 MHz
    	Modeline	"1024x768_90"	100.19  1024 1088 1200 1376  768 769 772 809  -HSync +Vsync
    	# 1024x768 @ 100.00 Hz (GTF) hsync: 81.40 kHz; pclk: 113.31 MHz
    	Modeline	"1024x768_100"  113.31  1024 1096 1208 1392  768 769 772 814  -HSync +Vsync
    	# 1280x720 @ 60.00 Hz (GTF) hsync: 44.76 kHz; pclk: 74.48 MHz
    	Modeline	"1280x720_60"	74.48  1280 1336 1472 1664  720 721 724 746  -HSync +Vsync
    	Modeline	"1280x800_60"	83.46  1280 1344 1480 1680  800 801 804 828  -HSync +Vsync
    	# 1280x1024 @ 60.00 Hz (GTF) hsync: 63.60 kHz; pclk: 108.88 MHz
    	Modeline	"1280x1024_60"  108.88  1280 1360 1496 1712  1024 1025 1028 1060  -HSync +Vsync
    	# 1280x1024 @ 72.00 Hz (GTF) hsync: 76.82 kHz; pclk: 132.75 MHz
    	Modeline	"1280x1024_72"  132.75  1280 1368 1504 1728  1024 1025 1028 1067  -HSync +Vsync
    	# 1280x1024 @ 75.00 Hz (GTF) hsync: 80.17 kHz; pclk: 138.54 MHz
    	Modeline	"1280x1024_75"  138.54  1280 1368 1504 1728  1024 1025 1028 1069  -HSync +Vsync
    	# 1280x1024 @ 85.00 Hz (GTF) hsync: 91.38 kHz; pclk: 159.36 MHz
    	Modeline	"1280x1024_85"  159.36  1280 1376 1512 1744  1024 1025 1028 1075  -HSync +Vsync
    	# 1280x1024 @ 90.00 Hz (GTF) hsync: 97.02 kHz; pclk: 169.20 MHz
    	Modeline	"1280x1024_90"  169.20  1280 1376 1512 1744  1024 1025 1028 1078  -HSync +Vsync
    	# 1280x1024 @ 100.00 Hz (GTF) hsync: 108.50 kHz; pclk: 190.96 MHz
    	Modeline	"1280x1024_100"	190.96  1280 1376 1520 1760  1024 1025 1028 1085  -HSync +Vsync
    	# 1600x1200 @ 60.00 Hz (GTF) hsync: 74.52 kHz; pclk: 160.96 MHz
    	Modeline	"1440x900_60"	106.47	1440 1520 1672 1904 900 901 904 932 -HSync +Vsync
    	Modeline	"1600x1200_60"  160.96  1600 1704 1880 2160  1200 1201 1204 1242  -HSync +Vsync
    	# 1600x1200 @ 72.00 Hz (GTF) hsync: 90.07 kHz; pclk: 196.00 MHz
    	Modeline	"1600x1200_72"  196.00  1600 1712 1888 2176  1200 1201 1204 1251  -HSync +Vsync
    	# 1600x1200 @ 75.00 Hz (GTF) hsync: 93.97 kHz; pclk: 205.99 MHz
    	Modeline	"1600x1200_75"  205.99  1600 1720 1896 2192  1200 1201 1204 1253  -HSync +Vsync
    	# 1600x1200 @ 85.00 Hz (GTF) hsync: 107.10 kHz; pclk: 234.76 MHz
    	Modeline	"1600x1200_85"  234.76  1600 1720 1896 2192  1200 1201 1204 1260  -HSync +Vsync
    	# 1600x1200 @ 90.00 Hz (GTF) hsync: 113.76 kHz; pclk: 251.18 MHz
    	Modeline	"1600x1200_90"  251.18  1600 1728 1904 2208  1200 1201 1204 1264  -HSync +Vsync
    	# 1680x1050 @ 60.00 Hz (GTF) hsync: 65.22 kHz; pclk: 147.14 MHz
    	Modeline	"1680x1050_60"  147.14  1680 1784 1968 2256  1050 1051 1054 1087  -HSync +Vsync
    	# 1680x1050 @ 72.00 Hz (GTF) hsync: 78.77 kHz; pclk: 178.96 MHz
    	Modeline	"1680x1050_72"  178.96  1680 1792 1976 2272  1050 1051 1054 1094  -HSync +Vsync
    	# 1680x1050 @ 75.00 Hz (GTF) hsync: 82.20 kHz; pclk: 188.07 MHz
    	Modeline	"1680x1050_75"  188.07  1680 1800 1984 2288  1050 1051 1054 1096  -HSync +Vsync
    	# 1680x1050 @ 85.00 Hz (GTF) hsync: 93.76 kHz; pclk: 214.51 MHz
    	Modeline	"1680x1050_85"	214.51  1680 1800 1984 2288  1050 1051 1054 1103  -HSync +Vsync
    	# 1920x1080 @ 60.00 Hz (GTF) hsync: 67.08 kHz; pclk: 172.80 MHz
    	Modeline	"1920x1080_60"  172.80  1920 2040 2248 2576  1080 1081 1084 1118  -HSync +Vsync
    	Modeline	"1920x1200_60"	154.0	1920 1968 2000 2080 1200 1203 1209 1235 +HSync -Vsync
    EndSection
    I am new at editing xorg conf files and treading cautiously with it. How does the cable relate to the settings in the x file? Is it another monitor device that is enumerated so maybe it should be Device1? Any help would be appreciated.

    When plugging a vga converter into the dvi port, it will find the resolution options fine. So I think I need to figure out how to specify more resolutions for an unknown monitor type to get this to work for me.

  2. #2
    I guess what I would need to know is how to identify where the resolution options for UNKNOWN monitor are specified.

    Edit: If I understand correctly, these DVI/VGA splitter cables have a vga passthrough on the DVI end connecting to the video card. So I put a vga to dvi converter on a monitor then plug in to the dvi port and it detects monitor fine. I put a dvi monitor on the dvi end of the splitter cable and it detects fine. When I put a vga monitor onto the 2nd end of the splitter cable it will not detect the vga monitor. I don't understand where the problem lies but if I can find which file holds the default resolutions offered to an UNKNOWN monitor I will be able to get around it and move on.

    Thanks
    Last edited by Blackcell; 05-19-2011 at 02:22 PM.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •