How to connect Mac Mini with LG 19LS4D LCD TV?

Question

Hi all,
I just purchased my Mac Mini and tried connecting to my LG 19" HD TV using the supplied DVI to VGA adapter. When I first booted the machine "No signal" was displayed on my TV. I plugged in another 15" monitor and played around with resolutions and cable swapping and it works at 1024 x 768 at 60Hz (not ideal but better than nothing). Everytime I turn off the Mac Mini or it goes to sleep the resolution is reset and "No signal" appears again.
I have tried connecting via VNC to play around with the settings remotely but this has no effect on my TV monitor and is only resolved by the solution above or by leaving my Mac awake and not sleeping.
The documentation for the TV says that all the resolutions I have tried, and more are supported and Detect Displays under System Preferences shows these but defaults to a resolution that produces a "No signal" box.
Any ideas would be greatly welcomed.
Thanks in advance

Answer 1

Hi BSteely,
Thanks for the reply. To answer your questions, the LG shows on the mini as it should do i.e. there is a specific code (the LG model number) and lists the resolutions and refresh rates listed in the manual. Adobe Photoshop complains of a bad colour profile but I think that was only because when the LG is finally lit up it is as a result of me connecting the 15" monitor then hot swapping before OS X has change to realise.
When using VNC with the LG attached 1024 x 768 at 60Hz is shown but selecting that does not show the screen on the LG.
I did install SwitchResX from looking at other forums but was unable to save a usable state as the profile and resolutions were from a different monitor effectively despite my LG being connected. The P&D file that it gave back is listed in full below although I suspect this is for my 15"monitor (Excuse the length but I am unsure as to which bits are most useful).
The LG manual lists 1440 x 900 at 60Hz as the native default however the mini fails to recognise this. The easiest resolution I can get after hot swapping monitors is 1024 x 768 at 60Hz although the other day (not sure how) I did get 1280 x 1024 (at 60Hz?). The LG does not however have a DVI port. It does have HDMI so a DVI to HDMI cable could work but without buying a cable I don't know.
Here is the LG's information file:
DDC block report generated by SwitchResX version 3.8.4 for display
VGA/SVGA Display
------------------- RAW DATA ------------------------
0 1 2 3 4 5 6 7 8 9 A B C D E F
0 | 00 FF FF FF FF FF FF 00 09 AD 38 02 BD E7 00 00
1 | 30 0B 01 01 08 1E 18 64 E8 17 26 A0 61 58 9A 2E
2 | 27 54 39 AD CE 00 01 01 01 01 01 01 01 01 01 01
3 | 01 01 01 01 01 01 C3 1E 00 20 41 00 20 30 10 60
4 | 13 00 1E 16 00 00 00 1E 64 19 00 40 41 00 26 30
5 | 18 88 36 00 1E 16 00 00 00 18 00 00 00 FD 00 3C
6 | 4B 1F 3C 08 00 0A 20 20 20 20 20 20 00 00 00 FE
7 | 00 46 58 57 4A 31 42 30 32 35 39 33 32 35 00 66
< 00FFFFFF FFFFFF00 09AD3802 BDE70000 300B0101 081E1864 E81726A0 61589A2E 275439AD CE000101 01010101 01010101 01010101 0101C31E 00204100 20301060 13001E16 0000001E 64190040 41002630 18883600 1E160000 00180000 00FD003C 4B1F3C08 000A2020 20202020 000000FE 00465857 4A314230 32353933 32350066 >
Valid EDID block: checksum passed
------------------- MAIN EDID BLOCK -----------------
EDID Version........1.1
Manufacturer........BMM
Product Code........14338 (3802) (0238)
Serial Number.......0000E7BD
Manufactured........Week 48 of year 2001
Max H Size..........30 cm
Max V Size..........24 cm
Gamma...............2.00
Display Supported Features:
Power Management: Active off Power Management: Suspend Power Management: Standby
Display type:
RGB color display
Display is non continuous frequency
Default color space is not sRGB standard
Input signal & sync:
Analog input with: 0.700V / 0.300V
Composite Sync
Color info:
Red x = 0.625 Green x = 0.345 Blue x = 0.180 White x = 0.329
Red y = 0.380 Green y = 0.604 Blue y = 0.154 White y = 0.225
Established Timings:
720 x 400 @ 70Hz
640 x 480 @ 60Hz
640 x 480 @ 72Hz
640 x 480 @ 75Hz
800 x 600 @ 60Hz
800 x 600 @ 72Hz
800 x 600 @ 75Hz
1024 x 768 @ 60Hz
1024 x 768 @ 70Hz
1024 x 768 @ 75Hz
Manufacturer Reserved Timings:
Standard Timing Identification:
Monitor Description blocks:
Descriptor #0 is Timing definition:
Mode = 1024 x 768 @ 75.029Hz
Pixel Clock............. 78.75 MHz Non-Interlaced
Horizontal Vertical
Active.................. 1024 pixels 768 lines
Front Porch............. 16 pixels 1 lines
Sync Width.............. 96 pixels 3 lines
Back Porch.............. 176 pixels 28 lines
Blanking................ 288 pixels 32 lines
Total................... 1312 pixels 800 lines
Scan Rate............... 60.023 kHz 75.029 Hz
Image Size.............. 30 mm 22 mm
Border.................. 0 pixels 0 lines
Sync: Digital separate with
* Positive vertical polarity
* Positive horizontal polarity
Descriptor #1 is Timing definition:
Mode = 1024 x 768 @ 60.004Hz
Pixel Clock............. 65.00 MHz Non-Interlaced
Horizontal Vertical
Active.................. 1024 pixels 768 lines
Front Porch............. 24 pixels 3 lines
Sync Width.............. 136 pixels 6 lines
Back Porch.............. 160 pixels 29 lines
Blanking................ 320 pixels 38 lines
Total................... 1344 pixels 806 lines
Scan Rate............... 48.363 kHz 60.004 Hz
Image Size.............. 30 mm 22 mm
Border.................. 0 pixels 0 lines
Sync: Digital separate with
* Negative vertical polarity
* Negative horizontal polarity
Descriptor #2 is Monitor limits:
Horizontal frequency range.......31-60 kHz
Vertical frequency range.........60-75 Hz
Maximum bandwidth unspecified
Descriptor #3 is ASCII data:
FXWJ1B0259325