8ender Posted October 25, 2012 Share Posted October 25, 2012 Wierd thing is that with the GTS250 the OS seems relatively stable but I can't play any sort of game for more than a minute or two without a crash. The GTX650 can play games just fine for hours but I'll still get an exception and lockup using the OS about once a day. Seems to be completely random. I'm also finding it strange that the larger hackintosh doesn't seem to be having this problem or we'd see more threads on it. Can everyone thats having this issue post their specs? Maybe there is another component we all have in common. Mine: Motherboard: Gigabyte EP45T-UD3LR CPU: Core2Quad Video: GTS250 or GTX650 Running: 10.8.2, MacPro 5,1 smbios, and ALC8xxHDA.kext, AppleRTC_Patched_Lion.kext, and JMicronATA.kext in the Extras folder. Link to comment Share on other sites More sharing options...
8ender Posted October 27, 2012 Share Posted October 27, 2012 Apple has released a special 10.8.2 update for the new retina macbooks as well as other 2012 macs. They seem to come with some brand new Nvidia drivers and are supposed to have reliability fixes. More information here: http://netkas.org/?p=1227 I've had these installed since last night and so far no exceptions with a fair amount of use and some gaming. I'll update in a few days or if I run into any exception but I'm keeping my fingers crossed that this is a solution. Link to comment Share on other sites More sharing options...
8ender Posted November 5, 2012 Share Posted November 5, 2012 Just an update to the above. The new drivers didn't fix any problems for me but see below. Posted this in the other exceptions thread: I think I've solved my random Channel Exceptions. I updated the bios on my EP45T-UD3LR from F5 to F10. Not sure why that fixed things but I've been crash free for 3 days now during lots of gaming and regular use. Going to keep on testing to make sure. I was also using a F5 specific DSDT and am now using a F10 bios specific one. I'm not knowledged enough on DSDT hacking to understand the differences between the two DSDTs but I can post them here if someone wants to take a look. Link to comment Share on other sites More sharing options...
hugeschnauzer Posted February 10, 2013 Share Posted February 10, 2013 MIne always crashing. 10.8.2. gtx285 please help!! Maybe its a good idea to do an upgrade in that GTX 285 to an ATI Whats the most powerful ATI's today/easy to install/no crash?? tks Link to comment Share on other sites More sharing options...
jeffmikels Posted February 13, 2013 Share Posted February 13, 2013 Just chiming in... I am getting the same error: kernel[0]: NVDA(OpenGL): Channel exception! exception type = 0xd = GR: SW Notify Error I'm running the following specs: Main Board: GIGABYTE GA-Z68X-UD3H-B3 (U1h) // this is the UEFI firmware CPU: i5-2500K // not overclocked GPU: Zotac GeForce 640 // runs brilliantly under Linux Mint 14 (cinnamon) with up to 500 FPS in Minecraft! Memory: Corsair Vengeance 8GB // on two 4GB sticks OS: Mountain Lion 10.8.2 The only game I play is Minecraft, and I regularly get channel exception errors during a gaming session, but it is unpredictable as to when the error shows up. I can log in by ssh and kill Minecraft to regain control of the computer. Sometimes I get the error in the OS itself, the screen will get corrupted and I'll lose control of the computer, but that is truly infrequent. I have tried removing the AGPM kext, but that didn't help, so I restored it. I have tried installing the latest nVidia Quadro 4000 driver, but that hasn't helped, so I'll restore the Apple provided one. One user on the Apple Forums (https://discussions.apple.com/thread/1916253?start=435&tstart=0) has posted that his solution was to completely remove all kexts starting with NV or GeF. That sounds drastic, but I'm willing to try it. For now, I simply reboot into Linux whenever I want to play Minecraft. Link to comment Share on other sites More sharing options...
mitch_de Posted February 19, 2013 Author Share Posted February 19, 2013 I also have probs with Channel Exception - even on old (non fermi/ non kepler) GT 9600. Coming up with 10.8.1. Now, with OS X 10.8.3 D68 they are gone. Perhaps next update (i think soon ) to 10.8.3 final will help at least some (non fermi) to avoid channel exception problem. Link to comment Share on other sites More sharing options...
Dr. Hurt Posted February 19, 2013 Share Posted February 19, 2013 This is a known problem with all cards using the NVDANV50Hal. Some cards also go into a low power state spontaneously causing major lags requiring a system reboot. Apple has acknowledged the issue and has fixed it in 10.8.3 Link to comment Share on other sites More sharing options...
hugeschnauzer Posted March 8, 2013 Share Posted March 8, 2013 Im running 10.8.3 D78 not disappeared yet GTX 285 Link to comment Share on other sites More sharing options...
aphex6b Posted March 12, 2013 Share Posted March 12, 2013 upgraded my HD5870 with a GTX 660Ti. Since then i started to experiencing the NVDA(OpenGL): Channel exception! exception system lockups about once a day (i suspected Safari is involved) Nothing helped to fix it. Now i upgraded to 10.8.3 D74 and i hope it's gone for now. I did lose Trim support (i have 4 SSD's) but i rather have non-working-trim-support then this NVIDIA OpenGL bug. If it's not fixed in 10.8.3 final i will go back to my hd5870 cause in 4 years running Ati cards in OSX86 i never had this {censored} before. Link to comment Share on other sites More sharing options...
hugeschnauzer Posted March 13, 2013 Share Posted March 13, 2013 10.8.3 did not solved the problem for me.. Maybe some tweak in dsdt... I hope to find a solution for that Link to comment Share on other sites More sharing options...
wishnu Posted March 13, 2013 Share Posted March 13, 2013 Seems like last 10.8.3 beta solved problem for me. 35 hours uptime with no freezes and no exceptions in system log 1 Link to comment Share on other sites More sharing options...
robin_hood Posted March 22, 2013 Share Posted March 22, 2013 10.8.3 has't resolved this issue, for me at leasˆ Mar 22 09:51:32 robinxps kernel[0]: NVDA(OpenGL): Channel exception! exception type = 0x8 = Fifo: Watchdog Timeout Error Mar 22 09:51:32 robinxps kernel[0]: IOVendorGLContext::ReportGPURestart Mar 22 09:51:32 robinxps kernel[0]: 0000006e Mar 22 09:51:32 robinxps kernel[0]: 00000001 0000902d 00000000 00000000 Mar 22 09:51:32 robinxps kernel[0]: 00000000 00000100 00000000 0000000c Mar 22 09:51:32 robinxps kernel[0]: 00000000 00000000 00000000 Mar 22 09:51:32 robinxps kernel[0]: 00000000 00000000 Mar 22 09:51:32 robinxps kernel[0]: 0000006e Mar 22 09:51:32 robinxps kernel[0]: 00000001 0000902d 00000000 00000000 Mar 22 09:51:32 robinxps kernel[0]: 00000000 00000100 00000000 0000000c Mar 22 09:51:32 robinxps kernel[0]: 00000000 00000000 00000000 Mar 22 09:51:32 robinxps kernel[0]: 00000000 00000000 Mar 22 09:51:32 robinxps kernel[0]: NVDA(OpenGL): Channel exception! exception type = 0xd = GR: SW Notify Error Link to comment Share on other sites More sharing options...
hugeschnauzer Posted March 23, 2013 Share Posted March 23, 2013 Same for me... Maybe the solution is inside the DSDT.. I need to extract it from Linux first, as Gringo vermelho told me.. No time right now.. but is crashing a lot Link to comment Share on other sites More sharing options...
RBOwens Posted March 27, 2013 Share Posted March 27, 2013 Perfectly working Asus P5Q, Geforce GTX460se and OS X 10.8.2. NEVER a problem, upgraded to 10.8.3 and the errors and lockups started. NVDA(OpenGl): Channel Timeout!.. I tried removing 10.8.3 Nvidia kexts and installing 10.8.2 and big crash. Complete Fresh install of 10.8.3 and same problem. This computer dual boots Windows 8 and NEVER a problem at any time. Clearly a driver issue. Why cant Apple/Nvidia make a driver that just works with all Nvidia cards. Hate to say it but Windows users have that exact thing, a single driver from NVIDIA that just plain works without crashes. Oh well, hopefully one of the more gifted Hackintosh people can figure this out... Link to comment Share on other sites More sharing options...
hugeschnauzer Posted April 3, 2013 Share Posted April 3, 2013 For me 10.8.3 is better.. less freezes.. And sometimes, if i wait some time the freeze stops and i can continue working Hope to find a solution for this someday... Link to comment Share on other sites More sharing options...
hugeschnauzer Posted April 6, 2013 Share Posted April 6, 2013 After a long time.. its solved!!! Added LegacyAGPM.kext with changed High/Low thresholds the file: http://cl.ly/0g3s2K2h3y3B as seen on: http://legacy.tonymacx86.com/viewtopic.php?f=15&t=20367&start=0&hilit=Channel+exception Open console and check typing AGPM. It must appear the current state GPU are using Until now, im very happy... even FCPX do not crash anymore Link to comment Share on other sites More sharing options...
Bandes Posted December 25, 2013 Share Posted December 25, 2013 Nvidia 9600 GT from 10.9.0 to 10.9.2 beta (13C32) Serious problems still 2013-12-25 01:55:28,000 kernel[0]: IOVendorGLContext::ReportGPURestart 2013-12-25 01:55:28,000 kernel[0]: NVDA(OpenGL): Channel exception! exception type = 0xd = Graphics Engine Error (GR Error 5) 2013-12-25 01:55:48,000 kernel[0]: NVDA(OpenGL): Channel timeout! UI Freezing & Crashing. with h264 web videos and desktop apps. http://www.midwesternmac.com/blogs/jeff-geerling/glitchy-video-and-freezes https://discussions.apple.com/message/19274496#19274496 Affecting real Macbook Pros too with Nvidia 9400m or Nvidia 9600m GT graphics. This things started happening at 10.8 Mountain Lion. It is a shame that after more than one year it's still not fixed. Link to comment Share on other sites More sharing options...
Bandes Posted September 9, 2014 Share Posted September 9, 2014 I have bought instead a Gainward GT630 1Gb card. Kepler GK208 chip. Slow memory. 14 Gb/sec only compared to the 56 Gb/sec of the 9600 GT, but the GPU itself has 3 times as much power. 691 GFlops compared to 208. All problems gone. No crashes anymore. Link to comment Share on other sites More sharing options...
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