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Refresh Rates and DisplayConfigX or SwitchResX


Adam Smith
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Hi,

 

I have a problem running OSx86 up to full resolution on my SyncMaster 710v montor.

 

If I try "Graphics Mode"="1280x1024x32@60" at the boot prompt I get a blank screen

saying "Invalid Refresh Rate, optimum resolution 1280x1024 at 60hz" which seems to be

because the rate it tries is 76.1 hz, just outside the maximum for my display. The @60

should fix this but does not work as I have only a VESA 2.0 grahics adapter on the portable.

 

I've tried DisplayConfigX to set the refresh rate up and it creates an xml file in

/System/Library/Displays/... (attached) but caused the loginwindow application

to crash on startup (see log below and attached)

 

I've also tried SwitchResX but it seems it can not change the resolution for the

default VGA driver which I am using as my adapter is not supported (ATI Radeon

9100 on HP nx9110).

 

Does anybody have any other suggestions?

 

Thanks for any tips

 

AS

 

Exception: EXC_BAD_ACCESS (0x0001)

Codes: KERN_PROTECTION_FAILURE (0x0002) at 0x00000001

 

Thread 0 Crashed:

0 com.apple.CoreFoundation 0x908050e4 CFDictionaryGetValue + 17

1 com.apple.CoreGraphics 0x903bac56 numberForKey + 27

2 com.apple.CoreGraphics 0x903b9560 CGDisplayCurrentMode + 108

3 com.apple.HIToolbox 0x92f0ce57 _FirstEventTime + 339

4 com.apple.HIToolbox 0x92f0cb8a RunCurrentEventLoopInMode + 41

5 com.apple.HIToolbox 0x92f0c2e9 ReceiveNextEventCommon + 184

6 com.apple.HIToolbox 0x92f0c209 BlockUntilNextEventMatchingListInMode + 81

7 com.apple.AppKit 0x933adba0 _DPSNextEvent + 567

8 com.apple.AppKit 0x933ad797 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 137

9 com.apple.AppKit 0x933a92bc -[NSApplication run] + 508

10 com.apple.loginwindow 0x00005763 0x1000 + 18275

11 com.apple.loginwindow 0x0000534a 0x1000 + 17226

12 com.apple.loginwindow 0x0001ab4d 0x1000 + 105293

 

DisplayProductID_717.xml

loginwindow.crash.log.txt

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Hi,

 

I've managed to take things a little further by downloading

and installing the Callisto drivers (v006) for the ATI controller

on my nx9110 portable. This stops DisplayConfigX crashing

on restart but I still can't switch to 1280x1024.

 

The road was a winding one. I had to enter the EDID string

for the SynchMaster 710v into Callisto.kext/Contents/Info.plist

to have the full range of the Display's resolutions available. You

can get the EDID string from SwitchResX/Display/Export DDC or

from Phoenix EDID Designer under Windows.

 

Switching trashes the display however, the only way to recover

from which is to move aside (rename to delete with a backup)

files: /Library/Preferences/com.apple.windowserver.plist and/or

~/Library/Preferences/ByHost/com.apple.windowserver.*.plist

or deleting from this last file the first entry "/DisplaySets/0".

 

The Saga continues...

 

AS

 

SyncMaster170v.txt

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  • 9 months later...
I've tried DisplayConfigX to set the refresh rate up and it creates an xml file in

/System/Library/Displays/... (attached) but caused the loginwindow application

to crash on startup (see log below and attached)

 

Ah, thanks for pointing out to that; I also tried DisplayConfigX, it also let my computer crash - but deleting that particular file saved me from installing OSX again...

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