funkyb001 Posted July 6, 2009 Share Posted July 6, 2009 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;} Link to comment Share on other sites More sharing options...
macko22 Posted July 7, 2009 Share Posted July 7, 2009 don't use DVI use DVI-VGA adapter on first DVI (nearest to mainboard) and reboot Link to comment Share on other sites More sharing options...
funkyb001 Posted July 7, 2009 Author Share Posted July 7, 2009 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;} Link to comment Share on other sites More sharing options...
macko22 Posted July 8, 2009 Share Posted July 8, 2009 yes it works! solution is to use DVI-VGA adapter with some displays. i thing there is some problem with hd4870 driver i found this infos on http://www.macuser.de/ in forum with keyword "Cursor / Maus ruckelt" Link to comment Share on other sites More sharing options...
biciolino Posted July 8, 2009 Share Posted July 8, 2009 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. Link to comment Share on other sites More sharing options...
macko22 Posted July 8, 2009 Share Posted July 8, 2009 http://www.macuser.de/forum/f4/macpro-2009...szeiger-443094/ http://www.macuser.de/forum/f4/cursor-maus-ruckelt-457208/ Link to comment Share on other sites More sharing options...
funkyb001 Posted July 8, 2009 Author Share Posted July 8, 2009 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 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) Link to comment Share on other sites More sharing options...
macko22 Posted July 8, 2009 Share Posted July 8, 2009 great! i'am glad it works for you too 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 Link to comment Share on other sites More sharing options...
funkyb001 Posted July 9, 2009 Author Share Posted July 9, 2009 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;} Link to comment Share on other sites More sharing options...
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