Restoring computer monitor's native resolution

Hi all,
In the middle of downloading and installing Windows updates, updating drivers, and restarting the computer, my computer monitor's resolution somehow changed. I believe that the native resolution is 1400x1050, but I can't seem to find that under Display Settings. How do I restore the native resolution?
Please help! Thanks.

what GPU are you using?
Regards,
Jin Li
May this year, be the year of 'DO'!
I am a volunteer, and not a paid staff of Lenovo or Microsoft

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Unable to use external display native resolution

Dear all,
Here is the current setup I'm using :
MacbookPro 15", hi res, Mid 2010 with Mac OS 10.6.6, software up-to-date
Apple MiniDisplayPort to VGA Adapter Firmware 1.03
IIYAMA Prolite E2607WSD, a 26" monitor with native resolution of 1920x1200 @ 60Hz
When connecting the MiniDisplayPort to VGA adapter to the VGA cable, the MBP doesn't enable me to set the external native monitor resolution of 1920x1200 with extended desktop. The maximum available resolution the macbookpro is able to diaply is 1920x1080.
What I tried :
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To make sure that the monitor was correctly behaving, I tried with a PC with WinXP, and I was able to get max resolution of 1920x1200 without an issue. I also tried with a Macbook 2008 with 10.5.6, and with it's own DisplayPort to VGA adapter (the "normal size" one, not the "mini" one I'm using with the MBP), and it worked as well with the native resolution of 1920x1200.
I 'm coming to the conclusion that either the minidisplayport to vga adapter doesn't accept any resolution higher than 1920x1080 or that the one I bought from Apple is not properly working, or that I should use the minidisplay port to DVI adapter (no HDMI here as an input for the monitor)...
I also browsed the forum and found a lot of similar issues, so I guess it's pretty common, but no workaround seems possible.
Does anybody in the community had the same issue and know how to solve it ?
Thanks in advance.
PolCls

Hello BSteely,
I actually tried to get the EDID information and to replicate them as much as possible but everytime I tried a custom resolution, after reboot, SRX will say " the system didn't accept this setup"... and the proper resolution is not available..
See below the data :
DDC block report generated by SwitchResX version 4.2 for display
PLE2607WSD
------------------- 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 26 CD 03 66 21 02 00 00
1 | 0C 14 01 03 68 37 22 78 2A 7B 65 A5 55 48 99 26
2 | 12 50 54 BD EF 80 71 4F 81 80 81 8F 95 00 95 0F
3 | A9 40 B3 00 D1 C0 7D 4B 80 A0 72 B0 2D 40 88 C8
4 | 36 00 26 58 21 00 00 1C 00 00 00 FF 00 31 31 30
5 | 35 36 30 31 32 30 30 35 34 35 00 00 00 FD 00 37
6 | 4C 1D 51 14 00 0A 20 20 20 20 20 20 00 00 00 FC
7 | 00 50 4C 45 32 36 30 37 57 53 44 0A 20 20 00 11
< 00FFFFFF FFFFFF00 26CD0366 21020000 0C140103 68372278 2A7B65A5 55489926 125054BD EF80714F 8180818F 9500950F A940B300 D1C07D4B 80A072B0 2D4088C8 36002658 2100001C 000000FF 00313130 35363031 32303035 34350000 00FD0037 4C1D5114 000A2020 20202020 000000FC 00504C45 32363037 5753440A 20200011 >
{ 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x26, 0xCD, 0x03, 0x66, 0x21, 0x02, 0x00, 0x00, 0x0C, 0x14, 0x01, 0x03, 0x68, 0x37, 0x22, 0x78, 0x2A, 0x7B, 0x65, 0xA5, 0x55, 0x48, 0x99, 0x26, 0x12, 0x50, 0x54, 0xBD, 0xEF, 0x80, 0x71, 0x4F, 0x81, 0x80, 0x81, 0x8F, 0x95, 0x00, 0x95, 0x0F, 0xA9, 0x40, 0xB3, 0x00, 0xD1, 0xC0, 0x7D, 0x4B, 0x80, 0xA0, 0x72, 0xB0, 0x2D, 0x40, 0x88, 0xC8, 0x36, 0x00, 0x26, 0x58, 0x21, 0x00, 0x00, 0x1C, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x31, 0x31, 0x30, 0x35, 0x36, 0x30, 0x31, 0x32, 0x30, 0x30, 0x35, 0x34, 0x35, 0x00, 0x00, 0x00, 0xFD, 0x00, 0x37, 0x4C, 0x1D, 0x51, 0x14, 0x00, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xFC, 0x00, 0x50, 0x4C, 0x45, 0x32, 0x36, 0x30, 0x37, 0x57, 0x53, 0x44, 0x0A, 0x20, 0x20, 0x00, 0x11, }
Valid EDID block: checksum passed
------------------- MAIN EDID BLOCK -----------------
EDID Version........1.3
Manufacturer........IVM
Product Code........870 (0366) (6603)
Serial Number.......00000221
Manufactured........Week 12 of year 2010
Max H Size..........55 cm
Max V Size..........34 cm
Gamma...............2,20
Display Supported Features:
Power Management: Active off
Display type:
RGB color display
Display is non continuous frequency
Default color space is not sRGB standard
Preferred timing mode includes Native Pixel Format
Input signal & sync:
Analog input with: 0.700V / 0.000V
Composite Sync
Color info:
Red x = 0,646 Green x = 0,283 Blue x = 0,149 White x = 0,313
Red y = 0,335 Green y = 0,601 Blue y = 0,072 White y = 0,329
Established Timings:
720 x 400 @ 70Hz
640 x 480 @ 60Hz
640 x 480 @ 67Hz
640 x 480 @ 72Hz
640 x 480 @ 75Hz
800 x 600 @ 60Hz
800 x 600 @ 72Hz
800 x 600 @ 75Hz
832 x 624 @ 75Hz
1024 x 768 @ 60Hz
1024 x 768 @ 70Hz
1024 x 768 @ 75Hz
1280 x 1024 @ 75Hz
Manufacturer Reserved Timings:
1152 x 870 @ 75Hz
Standard Timing Identification:
#0: 1152 x 864 @ 75Hz (714F)
#1: 1280 x 1024 @ 60Hz (8180)
#2: 1280 x 1024 @ 75Hz (818F)
#3: 1440 x 900 @ 60Hz (9500)
#4: 1440 x 900 @ 75Hz (950F)
#5: 1600 x 1200 @ 60Hz (A940)
#6: 1680 x 1050 @ 60Hz (B300)
#7: 1920 x 1080 @ 60Hz (D1C0)
Monitor Description blocks:
Descriptor #0 - Timing definition:
Mode = 1920 x 1200 @ 59,885Hz
Pixel Clock............. 193,25 MHz Non-Interlaced
Horizontal Vertical
Active.................. 1920 pixels 1200 lines
Front Porch............. 136 pixels 3 lines
Sync Width.............. 200 pixels 6 lines
Back Porch.............. 336 pixels 36 lines
Blanking................ 672 pixels 45 lines
Total................... 2592 pixels 1245 lines
Scan Rate............... 74,556 kHz 59,885 Hz
Image Size.............. 550 mm 344 mm
Border.................. 0 pixels 0 lines
Sync: Digital separate with
* Positive vertical polarity
* Negative horizontal polarity
Descriptor #1 - Serial number:
1105601200545
Descriptor #2 - Monitor limits:
Horizontal frequency range.......29-81 kHz
Vertical frequency range.........55-76 Hz
Maximum bandwidth unspecified
Descriptor #3 - Monitor name:
PLE2607WSD
What do you think are the parameters I should use ?
Thanks in advance;
Paul

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Hi,
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Message was edited by: eww

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Message was edited by: earnerich

earnerich,
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I've got a Viewsonic VG2436wm with a native resolution of 1920x1080 hooked up via a KVM switch to the VGA port on my T500.
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Hello,
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DDC block report generated by SwitchResX version 4.1.1 for display
LCM-22w3
------------------- RAW DATA ------------------------
0 1 2 3 4 5 6 7 8 9 A B C D E F
0 | 00 FF FF FF FF 91 FF 00 5C 85 03 22 01 01 01 01
1 | 13 11 01 03 68 2F 1E 78 2E C5 85 A4 59 49 9A 24
2 | 12 50 54 BF EF 00 81 80 81 40 71 4F 95 00 95 0F
3 | B3 00 81 C0 81 00 21 39 90 30 62 1A 27 40 68 B0
4 | 36 00 D9 28 11 00 00 1C 00 00 00 FD 00 38 4C 1E
5 | 52 10 00 0A 20 20 20 20 20 20 00 00 00 FF 00 30
6 | 0A 20 20 20 20 20 20 20 20 20 20 20 00 00 00 FC
7 | 00 4C 43 4D 2D 32 32 77 33 0A 20 20 20 20 00 1D
< 00FFFFFF FF91FF00 5C850322 01010101 13110103 682F1E78 2EC585A4 59499A24 125054BF EF008180 8140714F 9500950F B30081C0 81002139 9030621A 274068B0 3600D928 1100001C 000000FD 00384C1E 5210000A 20202020 20200000 00FF0030 0A202020 20202020 20202020 000000FC 004C434D 2D323277 330A2020 2020001D >
Invalid EDID block: checksum failed. Last byte should be 8B
------------------- MAIN EDID BLOCK -----------------
EDID Version........1.3
Manufacturer........WDE
Product Code........802 (0322) (2203)
Serial Number.......01010101
Manufactured........Week 19 of year 2007
Max H Size..........47 cm
Max V Size..........30 cm
Gamma...............2.20
Display Supported Features:
Power Management: Active off
Display type:
RGB color display
Display is non continuous frequency
Default color space is sRGB standard
Preferred timing mode includes Native Pixel Format
Input signal & sync:
Analog input with: 0.700V / 0.000V
Composite Sync
Color info:
Red x = 0.644 Green x = 0.286 Blue x = 0.143 White x = 0.313
Red y = 0.348 Green y = 0.603 Blue y = 0.070 White y = 0.329
Established Timings:
720 x 400 @ 70Hz
640 x 480 @ 60Hz
640 x 480 @ 67Hz
640 x 480 @ 72Hz
640 x 480 @ 75Hz
800 x 600 @ 56Hz
800 x 600 @ 60Hz
800 x 600 @ 72Hz
800 x 600 @ 75Hz
832 x 624 @ 75Hz
1024 x 768 @ 60Hz
1024 x 768 @ 70Hz
1024 x 768 @ 75Hz
1280 x 1024 @ 75Hz
Manufacturer Reserved Timings:
Standard Timing Identification:
#0: 1280 x 1024 @ 60Hz (8180)
#1: 1280 x 960 @ 60Hz (8140)
#2: 1152 x 864 @ 75Hz (714F)
#3: 1440 x 900 @ 60Hz (9500)
#4: 1440 x 900 @ 75Hz (950F)
#5: 1680 x 1050 @ 60Hz (B300)
#6: 1280 x 720 @ 60Hz (81C0)
#7: 1280 x 800 @ 60Hz (8100)
Monitor Description blocks:
Descriptor #0 - Timing definition:
Mode = 1680 x 1050 @ 59.954Hz
Pixel Clock............. 146.25 MHz Non-Interlaced
Horizontal Vertical
Active.................. 1680 pixels 1050 lines
Front Porch............. 104 pixels 3 lines
Sync Width.............. 176 pixels 6 lines
Back Porch.............. 280 pixels 30 lines
Blanking................ 560 pixels 39 lines
Total................... 2240 pixels 1089 lines
Scan Rate............... 65.290 kHz 59.954 Hz
Image Size.............. 473 mm 296 mm
Border.................. 0 pixels 0 lines
Sync: Digital separate with
* Positive vertical polarity
* Negative horizontal polarity
Descriptor #1 - Monitor limits:
Horizontal frequency range.......30-82 kHz
Vertical frequency range.........56-76 Hz
Maximum bandwidth unspecified
Descriptor #2 - Serial number:
0
Descriptor #3 - Monitor name:
LCM-22w3
Any ideas? Switchresx didn't work, either

Well, you can move the file from the desktop back to its original location to at least get back to what you had before.
The file structure under Snow Leopard has changed and it's hard to keep up with this stuff. There is also now a com.apple.WindowServer.plist file in /System/Library/LaunchDaemons that you could try moving to the desktop and restarting. I dunno. Same rule applies.....if it doesn't help, move the file from the desktop back to its original location.

I need to connect a computer monitor to my MacBook Pro but have found that when using the mini display port to VGA adaptor the screen display on my macbook is very small font. Please what do I do to correct this?

I need to connect a computer monitor to my mac book pro, using a mini display port to VGA adaptor. But have experienced a drastic reduction in font size on my
Mac screen even before I have managed to check the result on the monitor screen. Please how do I compensate for this and restore my mac screen appearance?
Many Thanks Alangium in uk

Hi alangium,
Welcome to the Support Communities!
Resetting your computer's PRAM should restore your Macbook Pro's screen appearance.
OS X Mavericks: Reset your computer’s PRAM
http://support.apple.com/kb/ph14222
This article may provide some information about your Mini DisplayPort to AVI adapter. Have you tried to connect a different VGA monitor to your Macbook to see if you get the same results?
Apple Mini DisplayPort adapters: Frequently asked questions (FAQ)
http://support.apple.com/kb/HT3382
18. What is the maximum resolution available for use with the Apple Mini DisplayPort to VGA adapter?
The resolution available with the Apple Mini DisplayPort to VGA Adapter is 1920 x 1200. VGA displays that use higher refresh rates (such as 85 Hz) at resolutions of 1600 x 1200 or greater may not generate video properly until you lower the refresh rate.
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/HT1573#5
How can I detect displays?
If the detect displays option is not available, hold down the Option key while you are in the Display pane.
How do I select additional resolutions on my display?
You can use the Display pane of System Preferences to specify how your display works. Not all options appear for all display models. By default the best resolution for your display will already be selected in System Preferences.
To select a different resolution, use the Scaled option. Some additional resolutions may be available when you hold the Option button.
I hope this information helps ....
- Judy

Restoring computer monitor's native resolution

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