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I try to connect my notebook acer aspire 5920g to my monitor samsung syncmaster 710mp but when i try to run xrandr it shows me that the vga-0 output is disconnected which means that the cable is disconnected, but the cable is connected and monitors light is blinking.
xrandr --verbose
output:
Screen 0: minimum 320 x 200, current 1280 x 800, maximum 8192 x 8192
LVDS connected primary 1280x800+0+0 (0x57) normal (normal left inverted right x axis y axis) 331mm x 207mm
Identifier: 0x51
Timestamp: 2451280
Subpixel: horizontal rgb
Gamma: 1.0:1.0:1.0
Brightness: 1.0
Clones:
CRTC: 0
CRTCs: 0 1
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
EDID:
00ffffffffffff004ca3453900000000
00110103802115780a87f594574f8c27
27505400000001010101010101010101
010101010101ee1a0080502010301030
13004bcf100000190000000f00000000
00000000002387026400000000fe0053
414d53554e470a2020202020000000fe
00313534415430312d3030310a2000df
TearFree: auto
supported: off, on, auto
scaling mode: Full
supported: None, Full, Center, Full aspect
link-status: Good
supported: Good, Bad
CONNECTOR_ID: 46
supported: 46
non-desktop: 0
range: (0, 1)
1280x800 (0x57) 68.940MHz -HSync -VSync *current +preferred
h: width 1280 start 1296 end 1344 total 1408 skew 0 clock 48.96KHz
v: height 800 start 801 end 804 total 816 clock 60.00Hz
1280x720 (0x58) 74.648MHz -HSync +VSync
h: width 1280 start 1344 end 1472 total 1664 skew 0 clock 44.86KHz
v: height 720 start 723 end 728 total 748 clock 59.97Hz
1152x768 (0x59) 71.951MHz -HSync +VSync
h: width 1152 start 1216 end 1328 total 1504 skew 0 clock 47.84KHz
v: height 768 start 771 end 781 total 798 clock 59.95Hz
1024x768 (0x5a) 63.531MHz -HSync +VSync
h: width 1024 start 1072 end 1176 total 1328 skew 0 clock 47.84KHz
v: height 768 start 771 end 775 total 798 clock 59.95Hz
800x600 (0x5b) 38.313MHz -HSync +VSync
h: width 800 start 832 end 912 total 1024 skew 0 clock 37.42KHz
v: height 600 start 603 end 607 total 624 clock 59.96Hz
848x480 (0x5c) 31.648MHz -HSync +VSync
h: width 848 start 872 end 952 total 1056 skew 0 clock 29.97KHz
v: height 480 start 483 end 493 total 500 clock 59.94Hz
720x480 (0x5d) 26.852MHz -HSync +VSync
h: width 720 start 744 end 808 total 896 skew 0 clock 29.97KHz
v: height 480 start 483 end 493 total 500 clock 59.94Hz
640x480 (0x5e) 23.975MHz -HSync +VSync
h: width 640 start 664 end 720 total 800 skew 0 clock 29.97KHz
v: height 480 start 483 end 487 total 500 clock 59.94Hz
VGA-0 disconnected (normal left inverted right x axis y axis)
Identifier: 0x52
Timestamp: 2451280
Subpixel: no subpixels
Clones:
CRTCs: 0 1
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
TearFree: auto
supported: off, on, auto
scaling mode: None
supported: None, Full, Center, Full aspect
load detection: 1
range: (0, 1)
link-status: Good
supported: Good, Bad
CONNECTOR_ID: 48
supported: 48
non-desktop: 0
range: (0, 1)
HDMI-0 disconnected (normal left inverted right x axis y axis)
Identifier: 0x53
Timestamp: 2451280
Subpixel: horizontal rgb
Clones:
CRTCs: 0 1
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
TearFree: auto
supported: off, on, auto
audio: auto
supported: off, on, auto
scaling mode: None
supported: None, Full, Center, Full aspect
dither: off
supported: off, on
underscan vborder: 0
range: (0, 128)
underscan hborder: 0
range: (0, 128)
underscan: off
supported: off, on, auto
coherent: 1
range: (0, 1)
link-status: Good
supported: Good, Bad
CONNECTOR_ID: 50
supported: 50
non-desktop: 0
range: (0, 1)
DVI-0 disconnected (normal left inverted right x axis y axis)
Identifier: 0x54
Timestamp: 2451280
Subpixel: horizontal rgb
Clones:
CRTCs: 0 1
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
TearFree: auto
supported: off, on, auto
load detection: 1
range: (0, 1)
audio: auto
supported: off, on, auto
scaling mode: None
supported: None, Full, Center, Full aspect
dither: off
supported: off, on
underscan vborder: 0
range: (0, 128)
underscan hborder: 0
range: (0, 128)
underscan: off
supported: off, on, auto
coherent: 1
range: (0, 1)
link-status: Good
supported: Good, Bad
CONNECTOR_ID: 51
supported: 51
non-desktop: 0
range: (0, 1)
DIN disconnected (normal left inverted right x axis y axis)
Identifier: 0x55
Timestamp: 2451280
Subpixel: no subpixels
Clones:
CRTCs: 0 1
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
TearFree: auto
supported: off, on, auto
tv standard: ntsc
supported: ntsc, pal, pal-m, pal-60, ntsc-j, scart-pal, pal-cn, secam
load detection: 1
range: (0, 1)
link-status: Good
supported: Good, Bad
CONNECTOR_ID: 53
supported: 53
non-desktop: 0
range: (0, 1)
and
lspci | grep vga
output:
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV635/M86 [Mobility Radeon HD 3650]
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