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User error causes display to no longer function in OS X. Any solution?

Submitted by martakz on August 17, 2006 - 10:04pm. Unix and Mac OS X

Hi All,

My monitor was working fine with 10.4.7. I decided to up the resolution to the native 1280x1024 and it worked fine. I then tried changing the refresh rate to 85Hz. The monitor no longer worked and reported that the signal was out of range.

I rebooted OS X into single user mode and trashed the display preferences from the command prompt. The machine now boots fine into OS X, at a low resolution - but as soon as I set the display back to 1280x1024, the software remembers the previous 85Hz setting and the display goes blank.

Anyone know a solution for this? I.e Where the darn prefered refresh rate is stored?

Thanks,

T

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protocol6v's picture

When you Hear the bong at boo

Submitted by protocol6v on August 18, 2006 - 3:00am.

When you Hear the bong at boot up, hold down command(apple)+option+P+R. wait for it to reboot about 2-3 times before you release the keys. If that doesn't work, when you boot up, go to display prefs and set the refresh as low as possible, then try and up the res to 1280x1024.

» MacBook Pro, 2.2GHz SR Core 2 Duo, 120GB HD, 2GB RAM,
PowerMac G5 Dual 2GHz, 3GB RAM, 1x 250GB HD, 4x 500GB HDs(Sonnet Tempo X4P), ATI Radeon 9650 256MB

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martakz's picture

As soon as I put the res back

Submitted by martakz on August 18, 2006 - 9:36am.

As soon as I put the res back up to 1280x1024 it uses the 85Hz refresh rate instead of the 60-70 I want it to.

» Now using x86 machines. Bye bye iMac266 (Strawberry), G3 1400 and the G3 IIsi.

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protocol6v's picture

You do know that you can abor

Submitted by protocol6v on August 18, 2006 - 1:03pm.

You do know that you can abort the res change without rebooting if it doesn't work right? Just hit esc after you change the res and it doesn't work.

» MacBook Pro, 2.2GHz SR Core 2 Duo, 120GB HD, 2GB RAM,
PowerMac G5 Dual 2GHz, 3GB RAM, 1x 250GB HD, 4x 500GB HDs(Sonnet Tempo X4P), ATI Radeon 9650 256MB

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Oelmuvun's picture

You could also install Switch

Submitted by Oelmuvun on August 18, 2006 - 2:31pm.

You could also install SwitchResX and mark that resolution+refreash rate combo as incompatible. SwitchResX would also allow you to set the resolution+refreash rate combo of your choice.

» 1Ghz PowerMac G4 AGP Graphics (Sawtooth), 1.19GB RAM, Radeon 7000 64MB DDR PCI/Rage 128 Pro 16MB AGP, 250GB/80GB HDs, Matshita SR-8585F/Creative CD5233E, 10.4.10/9.2.2
17" DELL D1028L CRT @ 1600x1024/15" ACANA Pro 15spCRT @ 1280x102417" DELL D1028L CRT

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martakz's picture

Re: You do know that you can abor

Submitted by martakz on August 18, 2006 - 3:58pm.
protocol6v wrote:
You do know that you can abort the res change without rebooting if it doesn't work right? Just hit esc after you change the res and it doesn't work.

It does not seem to work - it just changes the resolution and does not give any options to cancel as it believes it should wokr.

Edit: I'll try switchresX, thanks Smiling (I did try someother res changing program, but it was SOOOO slow in Rosetta...)

» Now using x86 machines. Bye bye iMac266 (Strawberry), G3 1400 and the G3 IIsi.

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