Empaquei aqui no seguinte problema:
Uso o notebook para assistir filmes ligando-o diretamente à entrada da TV LCD mas só posso fazer isso usando o Windows 7, pois o Ubuntu 10.10 não consegue mostrar as imagens adequadamente. A tela fica toda em tons de verde, como se um dos canais estivesse falhando. Pesquisando imaginei que podia ser uma questão de ajuste do gamma e tentei mudar os valores com o xrandr -- gamma mas fazer isso por tentativa e erro mostrou-se impossível. Utilizando o MonInfo no Windows eu peguei os valores de gamma usados pelo sistema mas parece que são duas coisas diferentes: enquanto o xrandr -gamma pede como parâmetros os valores para correção de cada cor (R, G e B) o MonInfo mostra uma tabela com sete valores (um valor geral do gamma e dois valores (x e y) para cada cor. Não sei se há relação entre as duas informações ou se com uma posso calcular a outra...
Essas são as informações do MonInfo
- - - -
Monitor
Model name............... RX-326
Windows description...... Monitor Genérico PnP
Manufacturer............. PEB
Plug and Play ID......... PEB0146
Serial number............ 16
Manufacture date......... 2008, ISO week 6
-------------------------
EDID revision............ 1.3
Input signal type........ Digital (DVI)
Color bit depth.......... Undefined
Display type............. RGB color
Screen size.............. 690 x 390 mm (31,2 in)
Power management......... Standby, Suspend, Active off/sleep
Extension blocs.......... 1 (Reserved - 0x00)
-------------------------
DDC/CI................... n/a
Color characteristics
Default color space...... Non-sRGB
Display gamma............ 2,00
Red chromaticity......... Rx 0,647 - Ry 0,339
Green chromaticity....... Gx 0,296 - Gy 0,613
Blue chromaticity........ Bx 0,138 - By 0,075
White point (default).... Wx 0,301 - Wy 0,327
Additional descriptors... None
Timing characteristics
Horizontal scan range.... 31-80kHz
Vertical scan range...... 56-85Hz
Video bandwidth.......... 140MHz
CVT standard............. Not supported
GTF standard............. Not supported
Additional descriptors... None
Preferred timing......... Yes
Native/preferred timing.. 1920x1080i at 60Hz (16:9)
Modeline............... "1920x1080" 74,250 1920 2008 2052 2200 1080 1084 1094 1124 interlace +hsync +vsync
Detailed timing #1....... 1280x720p at 60Hz (16:9)
Modeline............... "1280x720" 74,250 1280 1390 1430 1650 720 725 730 750 +hsync +vsync
Standard timings supported
640 x 480p at 60Hz - IBM VGA
800 x 600p at 85Hz - Manufacturer
1024 x 768p at 85Hz - Manufacturer
696 x 430p at 108Hz - VESA STD
640 x 400p at 113Hz - VESA STD
640 x 400p at 108Hz - VESA STD
632 x 390p at 113Hz - VESA STD
680 x 420p at 109Hz - VESA STD
672 x 420p at 115Hz - VESA STD
Report information
Date generated........... 02/01/2011
Software revision........ 2.55.0.868
Data source.............. Registry
Operating system......... 6.1.7600.2
Raw data
00,FF,FF,FF,FF,FF,FF,00,40,A2,46,01,10,00,00,00,06,12,01,03,81,45,27,64,EA,FC,53,A5,56,4B,9D,23,
13,4D,53,20,00,30,38,30,31,35,31,30,30,35,36,31,35,37,01,01,01,01,01,1D,80,18,71,1C,16,20,58,2C,
25,00,C4,8E,21,00,00,9E,01,1D,00,72,51,D0,1E,20,6E,28,55,00,C4,8E,21,00,00,1E,00,00,00,FD,00,38,
55,1F,50,0E,00,0A,20,20,20,20,20,20,00,00,00,FC,00,52,58,2D,33,32,36,0A,20,20,20,20,20,20,01,0B
E essas são as informações do xrandr
- - - - -
Screen 0: minimum 320 x 200, current 1366 x 1488, maximum 8192 x 8192
VGA1 disconnected (normal left inverted right x axis y axis)
Identifier: 0x41
Timestamp: 1985544
Subpixel: unknown
Clones:
CRTCs: 0 1
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
LVDS1 connected 1366x768+0+0 (0x46) normal (normal left inverted right x axis y axis) 256mm x 144mm
Identifier: 0x42
Timestamp: 1985544
Subpixel: horizontal rgb
Gamma: 1.0:1.0:1.0
Brightness: 1.0
Clones:
CRTC: 1
CRTCs: 1
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
EDID:
00ffffffffffff0030e41e0200000000
00130103801a0e780a08859558538c28
23505400000001010101010101010101
010101010101c61b5684500016303020
350000901000001bc61b568450001630
3020350000901000001b000000fe0035
394a5754803131365748320a00000000
00008402940100000002010a2020005b
BACKLIGHT: 15 (0x0000000f) range: (0,15)
Backlight: 15 (0x0000000f) range: (0,15)
scaling mode: Full aspect
supported: None Full Center Full aspect
1366x768 (0x46) 71.1MHz +HSync -VSync *current +preferred
h: width 1366 start 1414 end 1446 total 1498 skew 0 clock 47.5KHz
v: height 768 start 771 end 776 total 790 clock 60.1Hz
1360x768 (0x47) 84.8MHz -HSync +VSync
h: width 1360 start 1432 end 1568 total 1776 skew 0 clock 47.7KHz
v: height 768 start 771 end 781 total 798 clock 59.8Hz
1360x768 (0x48) 72.0MHz +HSync -VSync
h: width 1360 start 1408 end 1440 total 1520 skew 0 clock 47.4KHz
v: height 768 start 771 end 781 total 790 clock 60.0Hz
1024x768 (0x49) 65.0MHz -HSync -VSync
h: width 1024 start 1048 end 1184 total 1344 skew 0 clock 48.4KHz
v: height 768 start 771 end 777 total 806 clock 60.0Hz
800x600 (0x4a) 40.0MHz +HSync +VSync
h: width 800 start 840 end 968 total 1056 skew 0 clock 37.9KHz
v: height 600 start 601 end 605 total 628 clock 60.3Hz
800x600 (0x4b) 36.0MHz +HSync +VSync
h: width 800 start 824 end 896 total 1024 skew 0 clock 35.2KHz
v: height 600 start 601 end 603 total 625 clock 56.2Hz
640x480 (0x4c) 25.2MHz -HSync -VSync
h: width 640 start 656 end 752 total 800 skew 0 clock 31.5KHz
v: height 480 start 490 end 492 total 525 clock 59.9Hz
HDMI1 connected 1280x720+0+768 (0xe7) normal (normal left inverted right x axis y axis) 708mm x 398mm
Identifier: 0x43
Timestamp: 1985544
Subpixel: unknown
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:
00ffffffffffff0040a2460110000000
0612010381452764eafc53a5564b9d23
134d5320003038303135313030353631
353701010101011d8018711c1620582c
2500c48e2100009e011d007251d01e20
6e285500c48e2100001e000000fd0038
551f500e000a202020202020000000fc
0052582d3332360a202020202020010b
1280x720 (0xe6) 74.2MHz +HSync +VSync
h: width 1280 start 1720 end 1760 total 1980 skew 0 clock 37.5KHz
v: height 720 start 725 end 730 total 750 clock 50.0Hz
1280x720 (0xe7) 74.2MHz +HSync +VSync *current
h: width 1280 start 1390 end 1430 total 1650 skew 0 clock 45.0KHz
v: height 720 start 725 end 730 total 750 clock 60.0Hz
720x576 (0xe8) 27.0MHz -HSync -VSync
h: width 720 start 732 end 796 total 864 skew 0 clock 31.2KHz
v: height 576 start 581 end 586 total 625 clock 50.0Hz
720x480 (0xe9) 27.0MHz -HSync -VSync
h: width 720 start 736 end 798 total 858 skew 0 clock 31.5KHz
v: height 480 start 489 end 495 total 525 clock 59.9Hz
640x480 (0xea) 25.2MHz -HSync -VSync
h: width 640 start 656 end 752 total 800 skew 0 clock 31.5KHz
v: height 480 start 490 end 492 total 525 clock 60.0Hz
696x435 (0xeb) 46.1MHz -HSync +VSync
h: width 696 start 736 end 808 total 920 skew 0 clock 50.1KHz
v: height 435 start 436 end 439 total 464 clock 107.9Hz
680x425 (0xec) 43.9MHz -HSync +VSync
h: width 680 start 712 end 784 total 888 skew 0 clock 49.4KHz
v: height 425 start 426 end 429 total 453 clock 109.0Hz
672x420 (0xed) 45.5MHz -HSync +VSync
h: width 672 start 704 end 776 total 880 skew 0 clock 51.7KHz
v: height 420 start 421 end 424 total 449 clock 115.1Hz
640x400 (0xee) 40.2MHz -HSync +VSync
h: width 640 start 672 end 736 total 832 skew 0 clock 48.3KHz
v: height 400 start 401 end 404 total 428 clock 112.9Hz
640x400 (0xef) 38.3MHz -HSync +VSync
h: width 640 start 672 end 736 total 832 skew 0 clock 46.0KHz
v: height 400 start 401 end 404 total 426 clock 108.1Hz
632x395 (0xf0) 39.3MHz -HSync +VSync
h: width 632 start 664 end 728 total 824 skew 0 clock 47.7KHz
v: height 395 start 396 end 399 total 422 clock 113.1Hz
DP1 disconnected (normal left inverted right x axis y axis)
Identifier: 0x44
Timestamp: 1985544
Subpixel: unknown
Clones:
CRTCs: 0 1
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
DP2 disconnected (normal left inverted right x axis y axis)
Identifier: 0x45
Timestamp: 1985544
Subpixel: unknown
Clones:
CRTCs: 0 1
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
Tópico: Ubuntu mostra cores esverdeadas conectado a TV HDMI (GM45 + TV Proview RX326) (Lida 4290 vezes)