LG 32LC3R 1:1 with no scaling via ATI gfx card

danswan

Member
Hi - I'm not sure this is in the right forum so apologies in advance.

I just received my LG 32LC3R yesterday and spent a brief couple of hours last night trying to set it up. Seems like a good panel so far, but I'm having trouble getting the image size right through my Media Center 2005 box.

It's connected via HMDI -> DVI through an ATI X800XL graphics card. I set the resolution to 1360 x 768 but the image on screen was very slightly overlapping - i.e the very left edge of the start button wasn't visible and similar on the right hand side.

I checked the ATI catalyst drivers, and the setting 'scale image to fit panel' was checked. When I unchecked this the image shrank down to fill about 2/3 of the screen, with a black border around it.

It is definitely outputting 1360 x 768, but I'm not sure if the problem is one with the TV or the ATI drivers. One thing that seems wrong is the ATI drivers are picking up the TV as a 32LC3R-ZJ, not a 32LC3R. I'm not sure what native resolution a 32LC3R-ZJ has, but ATI think it is 1920x1080 (or similar, im not at my PC now). When I set the resolution to 1920x1080 the image is obviously too large for the screen.

Is this an issue with the TV or the ATI drivers? If it is the drivers, could a mod please move my post somewhere more appropriate please?

Thanks
 

danswan

Member
I have posted this question on 4 forums and have yet to receive a response - is it that complicated, or is it just a stupid question?

My investigations led me to try powerstrip, one thing worth noting is that the EDID info coming from the TV doesn't include a 1360x768 resolution. It only mentions 720x480p, 1920x540p, 1920x1080i, 1280x720p and 720x576p.

Surely when the TV has a native or recommended resolution of 1366x768 I should expect to see EDID information for this resolution?

I tried 1280x720p and this looks a lot better, the 'juddering' with the scaled 1360x768 has gone, however the display is again too big for the screen. Choosing the ATI option to scale to fit panel doesn't fix this.

I did try plugging the TV into my other PC, into a Geforce7800GT. The problem is still evident.

Have I got a faulty TV?
 

danswan

Member
Dragging this one up from the depths, as I didn't get any answers last time, and I am approaching the end of my TV's warranty.

Basically, I have read my TV's EDID with moninfo, both over the VGA connection and by using DVI-HDMI. The VGA info seems about right to me, problem is it's quite a distance between the TV and the PC so the long VGA cable I have is susceptible to ghosting and interference. I have a perfectly good DVI to HDMI cable, the picture quality is excellent and I want to use it, but the EDID from the TV prevents me from getting the results I need.

I will post the EDID info below. In a nutshell I just have a couple of questions:

1. Should the EDID via DVI read this way? To me, the information is utterly incorrect, prevents me from using the TV as I want to and in my opinion is faulty.

2. Can I create a custom EDID and upload it to the TV? If the TV can happily display 1366 x 768 over VGA surely it can do so over DVI/HDMI? If so, is there any help available to me doing this, as I am not confident about doing it on my own.

3. Alternatively, is this something that LG should be supporting me with? Unfortunatley I have had no luck with LG support - over the phone the technicians appear to have no clue what I am talking about, and my emails are ignored.

All thoughts welcomed.

EDID Info: VGA - This is what I expect to see over HDMI, other than the model number which is incorrect.

Monitor
Windows description......... Plug and Play Monitor
Manufacturer description.... 32LC3R-ZJ
Manufacturer................ LGE
————————————————————————————
Plug and Play ID............ GSM7587
Serial number............... 9509 (161209509)
EDID data source............ I2C bus (real-time)
————————————————————————————
Manufacture date............ 2006, ISO week 12
EDID revision............... 1.3
Display type and signal..... Analog 0.700,0.300 (1.0V p-p)
Sync input support.......... Separate
Screen size................. 700 x 390 mm (~33")
Power management............ n/a

Color characteristics
Display gamma............... 2.20
Red chromaticity............ Rx 0.640 - Ry 0.341
Green chromaticity.......... Gx 0.287 - Gy 0.610
Blue chromaticity........... Bx 0.146 - By 0.069
White point (default)....... Wx 0.285 - Wy 0.293

Timing characteristics
VESA GTF support............ Not supported
Horizontal scan range....... 31-50kHz
Vertical scan range......... 58-63Hz
Video bandwidth............. 90MHz
Extension blocks............ n/a
Timing recommendation #1.... 1360x768 at 60Hz
Modeline................ "1360x768" 84.750 1360 1432 1568 1776 768 771 776 798 -hsync +vsync
Timing recommendation #2.... 1280x768 at 60Hz
Modeline................ "1280x768" 80.140 1280 1344 1472 1664 768 771 778 798 -hsync -vsync

Standard timings supported
640 x 480 at 60Hz - IBM VGA
640 x 480 at 60Hz - VESA
720 x 400 at 70Hz - IBM VGA
800 x 600 at 60Hz - VESA
1024 x 768 at 60Hz - VESA
1280 x 768 at 60Hz - LGE
1360 x 768 at 60Hz - LGE

Raw EDID base
00: 00 FF FF FF FF FF FF 00 1E 6D 87 75 25 25 00 00
10: 0C 10 01 03 08 46 27 78 0A D9 B0 A3 57 49 9C 25
20: 11 49 4B A1 08 00 31 40 01 01 01 01 45 40 01 01
30: 61 40 01 01 01 01 1B 21 50 A0 51 00 1E 30 48 88
40: 35 00 BC 88 21 00 00 1C 4E 1F 00 80 51 00 1E 30
50: 40 80 37 00 BC 88 21 00 00 18 00 00 00 FD 00 3A
60: 3F 1F 32 09 00 0A 20 20 20 20 20 20 00 00 00 FC
70: 00 33 32 4C 43 33 52 2D 5A 4A 0A 20 20 20 00 07

Display adapter
Adapter description......... RADEON X800 Series
Adapter device ID........... 0x554D1002
Display settings............ 1360x768, 32bpp

User/computer information
Registered user name........ Media Centre
Registered organization..... n/a
Network user name........... Media
Network computer name....... MEDIA-1EACDBFD2
Windows version ............ Windows XP
Windows build .............. 5.01.2600 Service Pack 2
Installation date .......... 1/9/2007 12:00:00 PM

EDID over DVI-HDMI This is entirely wrong, it is telling my PC that the TV is a 44" model, seemingly with a 1920 x 1080 resolution.

Monitor
Windows description......... Plug and Play Monitor
Manufacturer description.... 32LC3R-ZJ
Manufacturer................ LGE
————————————————————————————
Plug and Play ID............ GSM7588
Serial number............... n/a
EDID data source............ I2C bus (real-time)
————————————————————————————
Manufacture date............ 2006, ISO week 12
EDID revision............... 1.3
Display type and signal..... Digital
Sync input support.......... n/a
Screen size................. 920 x 520 mm (~44")
Power management............ n/a

Color characteristics
Display gamma............... 2.50
Red chromaticity............ Rx 0.655 - Ry 0.331
Green chromaticity.......... Gx 0.258 - Gy 0.667
Blue chromaticity........... Bx 0.148 - By 0.062
White point (default)....... Wx 0.281 - Wy 0.297

Timing characteristics
VESA GTF support............ Not supported
Horizontal scan range....... 25-50kHz
Vertical scan range......... 45-65Hz
Video bandwidth............. 80MHz
Extension blocks............ 1
Timing recommendation #1.... 720x480 at 60Hz
Modeline................ "720x480" 27.000 720 736 798 858 480 489 495

525 -hsync -vsync
Timing recommendation #2.... 1920x540 at 60Hz
Modeline................ "1920x540" 74.250 1920 2008 2052 2200 540 542

547 562 +hsync +vsync
Timing recommendation #3.... 1920x1080 at 30Hz
Modeline................ "1920x1080" 74.250 1920 2008 2052 2200 1080

1084 1094 1124 interlace +hsync +vsync
Timing recommendation #4.... 1920x540 at 50Hz
Modeline................ "1920x540" 74.250 1920 2448 2492 2640 540 574

579 562 +hsync +vsync
Timing recommendation #5.... 1920x1080 at 25Hz
Modeline................ "1920x1080" 74.250 1920 2448 2492 2640 1080

1148 1158 1124 interlace +hsync +vsync
Timing recommendation #6.... 1280x720 at 50Hz
Modeline................ "1280x720" 74.250 1280 1720 1760 1980 720 741

746 750 +hsync +vsync
Timing recommendation #7.... 720x576 at 50Hz
Modeline................ "720x576" 27.000 720 732 796 864 576 581 586

625 -hsync -vsync
Timing recommendation #8.... 1280x720 at 60Hz
Modeline................ "1280x720" 74.250 1280 1390 1430 1650 720 725

730 750 +hsync +vsync

Standard timings supported
720 x 480 at 60Hz - LGE
720 x 576 at 50Hz - LGE
1280 x 720 at 50Hz - LGE
1280 x 720 at 60Hz - LGE
1920 x 540 at 50Hz - LGE
1920 x 540 at 60Hz - LGE
1920 x 1080 at 25Hz - LGE
1920 x 1080 at 30Hz - LGE

Raw EDID base
00: 00 FF FF FF FF FF FF 00 1E 6D 88 75 00 00 00 00
10: 0C 10 01 03 80 5C 34 96 0A F3 30 A7 54 42 AA 26
20: 0F 48 4C 00 00 00 01 01 01 01 01 01 01 01 01 01
30: 01 01 01 01 01 01 8C 0A D0 8A 20 E0 2D 10 10 3E
40: 96 00 C4 8E 21 00 00 18 00 00 00 FC 00 33 32 4C
50: 43 33 52 2D 5A 4A 0A 20 20 20 00 00 00 FD 00 2D
60: 41 19 32 08 00 0A 20 20 20 20 20 20 00 00 00 00
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 F6

Raw EDID extension (CEA-861)
00: 02 03 1C 72 23 09 07 02 49 07 16 81 03 05 14 13
10: 12 04 83 01 00 00 65 03 0C 00 10 00 01 1D 80 18
20: 71 1C 16 20 58 2C 25 00 C4 8E 21 00 00 9E 01 1D
30: 80 D0 72 1C 16 20 10 2C 25 80 C4 8E 21 00 00 9E
40: 01 1D 00 BC 52 D0 1E 20 B8 28 55 40 C4 8E 21 00
50: 00 1E 8C 0A D0 90 20 40 31 20 0C 40 55 00 C4 8E
60: 21 00 00 18 01 1D 00 72 51 D0 1E 20 6E 28 55 00
70: C4 8E 21 00 00 1E 00 00 00 00 00 00 00 00 00 2F

EIA/CEA-861 Information
Revision number............. 3
DTV underscan............... Not supported
Basic audio................. Supported
YCbCr 4:4:4................. Supported
YCbCr 4:2:2................. Supported
Native formats supported.... 2
DTV formats supported....... 3

CE standard timings supported
720 x 240p at 59.94/60Hz (16:9) - Doublescan
720 x 480i at 59.94/60Hz (16:9) - Doublescan
720 x 480p at 59.94/60Hz (4:3) - EDTV

Display adapter
Adapter description......... RADEON X800 Series
Adapter device ID........... 0x554D1002
Display settings............ 1360x768, 32bpp

User/computer information
Registered user name........ Media Centre
Registered organization..... n/a
Network user name........... Media
Network computer name....... MEDIA-1EACDBFD2
Windows version ............ Windows XP
Windows build .............. 5.01.2600 Service Pack 2
Installation date .......... 1/9/2007 12:00:00 PM
 

roryLCD

Standard Member
i too would also like to know this.

i have the 32le2r model which is supposed to support 1080i. i recently switched to a 4670 graphics card, and am now running DVI to HDMi connection. on 720p it works fine, but ideally i;d like to run at 1080i. now when i set my pc to this it goes all flickery and unstable.

does this mean it isnt a true 1080 TV, it supported my upscaling HDMi interface DVD recorder before hand, but it struggles with the the PC...any suggestions??
 

The latest video from AVForums

AVForums Movies Podcast: Streaming Theatrical Releases And The Future Of Cinema
Subscribe to our YouTube channel
Support AVForums with Patreon

Top Bottom