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funkyb001

Bizarre mouse pauses when HD4870 driver is installed [SOLVED, thank you macko22!]

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I've posted about this problem elsewhere on these forums, but after some work it appears to be related to the ATI driver.

 

When I have the HD4870 drivers installed (as per this thread http://www.insanelymac.com/forum/index.php?showtopic=155477) my mouse and keyboard pause briefly (>0.5 sec) every 2 seconds or so. For the 2 secs in between pauses it is fine.

 

This is not a system hang. If I run Safari with a flash animation then it keeps going uninterrupted whilst the mouse dies. The pause appears to only affect the mouse and keyboard (that I've found). I've tried unplugging all other USB devices and I've tried another mouse, all with the same effect. Activity monitor shows nothing using CPU or Disk during the spikes. I've tried booting with cpus=1 to disable the second core but no help.

 

When the ATI driver is uninstalled I am forced to 1024x768 and a single monitor, but the mouse and kb are fine.

 

Any ideas about how to resolve this?

 

Specs:

Intel Core 2 Duo 6800

Gigabyte GA-965P-DS4 mobo

ATI Radeon 4870

4GB RAM

1 SATA-attached drive - 2 partitions (Primary: Mac file system, Secondary: NTFS storage)

1 SATA DVDWriter

 

Thanks .kLink { display: none; } .iAs { display: none;}

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What makes you think this would work? I've not read anything about DVI being unsupported.

Anyway I tried it out of silliness and it made no difference. Thanks anyway.

 

Any other suggestions?

.kLink { display: none; } .iAs { display: none;}

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Any other suggestions?

 

Check your system configuration and see if QuartzGL is enabled or not. If it is, just disable it using, i.e. OSX86Tools or search for "Disabling QuartzGL" for a simple terminal command.

 

Be careful, i'm not referring to Quartz Extreme. You need Quartz Extreme but you definitely do not need QuartzGL (formerly Quartz2D Extreme). It's deprecated and definitely not working with HD4xxx, it causes mouse stuttering/freezing.

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macko22:

 

My God, you're right!

 

I switched one of my monitors to VGA and it didn't help, but you seemed so insistent I tried switching the other one instead and it's fixed, thank you so much, this has been driving me crazy!

 

 

If only my German was better, I might have spotted those posts you linked :wallbash:

 

Thanks again

 

-i

 

 

biciolino: Thanks for the suggestion, I will keep that in mind and see if it helps when future issues arise (as i'm sure they will)

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great! i'am glad it works for you too :D

 

can you post what display it was?

 

i had problems with Samsung SyncMaster 931BF when DVI was conected.

 

no problems with Fujitsu-Siemens TV Myrica 32

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It was a Samsung SyncMaster 940BF, what a coincidence! :)

 

My other display is an LG W2252TQ and is fine on DVI.

.kLink { display: none; } .iAs { display: none;}

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