-127 GPU Diode...

Hello Fellas,
I was just doing simple safari work, youtubing, and ichat. Just about 20-30 minutes I've always used istat nano widget from dashboard to monitor my temperature usage, then I just wanted to check my temperature if it's okay cos it was getting warm (not hot) just warm. And suddenly I saw GPU Diode -127F, I immediately surfed the web to see if it's a normal reading, I couldn't find much so I decided to restart my computer. Mind you, I just got this Mid-2010 macbook pro 15" i5 like 2 weeks ago so I figured there shouldn't be any problems and it's not a refurbish one either. Brand new. Anyways, back on topic, I saw the GPU Diode -127F, I restarted my laptop and the GPU Diode is gone. SO I read up some forums, saying the istat nano widget might be outdated so I got rid of it and reinstalled the new version 3 istat pro menu up at the menu bar because I bought it for $16. They make you pay for it now after 14 days so I figured why not since it's updated and you pay for it, probably better quality. So far I haven't seen the GPU Diode, I was just wondering if anyone has had that with the istat nano widget. Is it something I should bring to the apple store to check anything? Since this is my first mac and all, tend to worry especially when it's an almost 2k worth of machine. I even called up apple and the guy said it's fine but the minus sign do worry me quite a bit. Thanks hope to get some replies soon

You know how the new v3 of istat menu has a sensor where you adjust the fans? How is yours adjusted to a reasonable speed for your macbook pro? I don't want to mess with it and damage my fan. So I was wondering how yours is done. I noticed there is a "Default" & "Medium". I'm not sure how it goes about. I am enjoying my new machine lol it's just that I don't want to damage it so that's why I'm asking around. It's worth almost 2k, should be careful with it and all being my first mac. And do you leave your ac adapter in your macbook pro all the time? I remove it when I go to school, I don't use the ac adapter at school. I downloaded coconutbattery, it says my laptop is 3 months old. When I first got it, there was 2 count cycles, so far there's 8 count cycles. Is that okay? I've only used 6 cycles, by far.

Similar Messages

GPU diode sensor problem?

The GPU diode temperature is -128C (temperature monitor) and blank (istatpro).
After some heavy use, the two programs are showing some readings, but the GPU diode temperature is much lower than the others (CPU, Heatsink, etc).
Is this a problem of the sensor?
(macbookpro 17”, early 2011).
Thnxs for your help.

Hi,
I know this is an old thread - but I came across it while searching for info as to why my precious MBP had the same issue. I believe I may have an answer, so wanted to post.
I noticed that the bug is not related to iStat as every other temp app I have used says the same thing. I also know it's not a sensor problem as I have run the Apple diag disk and a friend of mine who works in an Apple shop took a look and he says there's no problem either.
I downloaded gfxcardstatus as suggested in this thread, and I can see that when using the intel HD card, the temp is ~110c, when using the 330M it's ~50c, but here's the weird thing - when I try to switch to intel when certain apps are running, I get a warning saying that I cannot do this. If you click on the [Why?] button, you are taken to an explanation on the author's site, which says that the discreet card is never really turned off when certain apps are running - ie. 2 cards.... so I believe that the ~110c is a COMBINED reading for both cards which are running together but should not be. It's quite plausible that the intel HD would be running at ~60c, so there's your 110c.
Here's a pic of the authors site explaining the issue -
The best option would appear to be to keep it on the discreet card.
I hope this helps put other's minds at rest!!
PS. For me, the trigger apps are Little Snitch and iStat Menus.

GPU DIODE TEMPERATURA ALTA.....

Salve, è un po' che ho un problema al mio iMac appena accendo ventole a manetta poi dopo 10 minuti schermo nero pero' ho riscontrato con Istat pro una temperatura alta la GPU DIODE arrivato a 116 vorrei sapere cos'è cosa non va al mio iMac da 24" processore intel 2 duo da 2.8 anno 2008... Grazie. Gianfranco
Hi, is a bit 'I have a problem to my iMac just turn on fans to throttle then after 10 minutes black screen but' I found with a high temperature Istat pro GPU DIODE came to 116 would like to know what what's wrong to my iMac 24 "intel 2 duo 2.8-year 2008 ... Thank you. Gianfranco

Hi,
I know this is an old thread - but I came across it while searching for info as to why my precious MBP had the same issue. I believe I may have an answer, so wanted to post.
I noticed that the bug is not related to iStat as every other temp app I have used says the same thing. I also know it's not a sensor problem as I have run the Apple diag disk and a friend of mine who works in an Apple shop took a look and he says there's no problem either.
I downloaded gfxcardstatus as suggested in this thread, and I can see that when using the intel HD card, the temp is ~110c, when using the 330M it's ~50c, but here's the weird thing - when I try to switch to intel when certain apps are running, I get a warning saying that I cannot do this. If you click on the [Why?] button, you are taken to an explanation on the author's site, which says that the discreet card is never really turned off when certain apps are running - ie. 2 cards.... so I believe that the ~110c is a COMBINED reading for both cards which are running together but should not be. It's quite plausible that the intel HD would be running at ~60c, so there's your 110c.
Here's a pic of the authors site explaining the issue -
The best option would appear to be to keep it on the discreet card.
I hope this helps put other's minds at rest!!
PS. For me, the trigger apps are Little Snitch and iStat Menus.

Hot GPU diode and noisy fan - 3600rpm

After an hour my iMAC's GPU diode is running at 88° and the CPU fan is noisy at 3600rpm. I have taken it to an Apple certified reseller and they couldn't find anything wrong. Can anyone help suggest a reason why it is running hot and noisy?

Hello davemo73 I have the right the same problem, I have taken to an Apple certified support and they told me that is everything all right with my iMac, when I arrived in my home an surprise! the same issue... noisy fan and rpms too fast. Im really worried about, I dont wanna to change the logical board (60% of imac, too much expensive in my country, like a $1100,00 half cost of new machine.).
Can someone from Apple help us? PLS I'm going crazy!!!

GPU Diode runs extremely hot?

I just bought a MacBook Pro and downloaded Civilizations V. I play at 1280*1080 fullscreen resolution with the lowest graphics settings. My computer (non retina display) has a Nvidia GeForce GT 650M graphics processor with 1 GB VRAM, Intel HD Graphics 4000, 1680 * 1050 resolution, 8 GB RAM, 2.7 GhZ quad-core processor, and a solid-state drive, so I thought playing on the lowest settings with a 1280*1080 fullscreen wouldn't tax it too much, but the GPU runs from 160-170 F and the GPU diode, whatever that is, is 180-185 F, which is worrisome to me. Usually the how-to guides say to clean your computer and stuff to cool it better, but my computer is 2 days old and my room is not dusty so I doubt that's the cause. I haven't downloaded any strange applications or anything. Interestingly, when I played with the highest graphics settings and resolution, it did not seem to raise the temperature of the GPU diode any further. Also, when I brought my big fan next to the computer and placed it on high speed, it didn't lower the temperature of the GPU diode. So maybe iStat pro is wrong, however, when I touch the top of my keyboard (above all the keys and right next to the screen) it is very hot to the touch. Is something wrong with my computer? Is 185 F safe for a GPU diode, and 175 safe for a GPU, and 145 for a CPU heatsink? Should I just not play this game?

Hi ns180.
I've read your post and I see that I have a similar problem.
I run the Civilization V in an iMac 24 in and my Graphic Processor Diode reaches the 90 ºC (194 F). When this happen I left the game immediately. I've recently change (for second time) my hard disk and probably the last two were damage by the heat, so when I change the disk, of course, I cleaned the circuits with isopropyl alcohol and spay them with compressed air. I´m running recently, just after the last repair, the Temperature Monitor and SMC Fan Control and for sure it doesn't matter what I do, I can't reduce the temperature of the GPD. In fact, I'm writing right now, only using the Firefox and GPD is in 80 ºC. The back of the iMac, the left up corner, is very hot all the time. I put an exterior fan, a big one, and nothing... I'ts still hot the GPD. This means that I can cool the exterior of the Mac, but never the interior.
My conclusions for the moment is that may be the GPD is damaged and the best possibility is trying to change it or find other way to cool the interior of the Mac.
Greetings from Mexico.

Unexpected shutdowns / high GPU diode temperatures / new RAM?

Hi there, all. First time posting on the discussion forum.
My problem started earlier. I ordered some additional RAM for the new World of Warcraft expansion and put it in today. Here's the RAM in question, from the place I got it from:
http://www.crucial.com/store/partspecs.aspx?imodule=CT25664AC667
I used their locator tool, input my computer (24" iMac, 2.33ghz, late 2007), and that's what it gave me. Just to be safe I cross-checked it with the RAM specs necessary that I found here:
http://support.apple.com/kb/HT1423
As far as I could tell, this all checked out. I ordered the RAM and installed it today with little effort. I did notice that the levers for popping out/securing the RAM were a little hard to move. It seemed like they were an awfully tight fit, and sometimes were touching the sodimms as they moved in and out. Nevertheless everything fit in and clicked. I removed one of the 1gb sodimms I had by default and installed my new 2gb sodimm, for a total of 3gb.
After that I rebooted and checked system profiler. It registered 3gb of memory and said both modules were working OK. I checked iStat Pro and it also showed 3gb of memory. I noticed a pretty substantial performance increase in WoW, which is what I was looking for, so I assumed everything was fine. I played WoW all day, from about 12:00 noon to midnight off and on. No problems.
Around midnight, my computer shut down. No warning at all. I thought it was a power outage of some kind; either a cord was loose, my power strip was out, etc. That's how sudden and weird it was. I checked my cords, unplugged the power, plugged it back in, and rebooted.
About 5 minutes later, it happened again. I repeated this 3-4 times. Each time I booted up, checked to make sure the RAM was working properly, fired up WoW, and it would crap out very shortly afterward.
After a few repeats of this I started looking at my temperatures in iStat Pro. I noticed that the GPU Diode was significantly higher than the others - in the 170 degrees Fahrenheit / 70 degrees Celsius range. I watched them closely as I rebooted, and I figured out that as soon as the GPU Diode temperature got into the 170f/70c range my computer would die instantly.
Did some research on these forums and elsewhere, and discovered reports of a pretty widespread issue of GPUs overheating on the Intel iMacs, with an identical response: instant shutdown at a critical temperature.
The computer geek in me says that this is a problem with the RAM. However, system profiler and iStat Pro all say the RAM is functioning properly. And if the problem does have to do with the GPU, as the temperatures seem to indicate, is that connected to the RAM?
Anyway. I unplugged my system and reseated the RAM just to be sure everything was fitted properly. I think that one of the sodimms may have been loose. I made double sure everything clicked into place this time, and as of this writing WoW has been running for 35 minutes with no hitches. The GPU Diode temperature went as high as 190f/90c, but my computer didn't shut down. Now the GPU Diode has calmed down to a more reasonable 160f/70c, and it's hovering there.
Anybody have any input? The problem has gone away for the moment, but my temperatures are still pretty high and I'm a little nervous. Should I take it in to the Apple store? I have Applecare, so it certainly wouldn't hurt.

Hi arco311
It does sound like you may have dislodged the remaining 1GB module or not fully seated the new 2GB module. If you have any more issues that seem to be ram related, reinstall the ram pushing real hard on each of the modules with both thumbs and then close the ejector clips.
There are three fans in the Intel iMac (CPU/GPU, HD and Optical Drive) and you may want to experiment with smcFanControl 2.1.3. Then run up only the CPU/GPU fan speed a couple hundred RPM to see if that helps to keep the GPU down in the 160 to 170 range.
http://www.macupdate.com/info.php/id/23049
Dennis

GPU Diode above 90 C?

Hey guys, this morning I logged onto Starcraft 2 on my Macbook pro(13-inch/2012) just to see if my buddies were online and after 5 min my GPU temp diode rose up to 98 C. Is this a problem? I wasn't even in-game, just in the menus. My macbook is less than 1 month old.
2.9GHz Dual-core Intel Core i7
8GB 1600MHz DDR3 SDRAM - 2x4GB
256GB Solid State Drive

Yes, that is a problem.
Open Activity Monitor in the Utilities folder. Select All Processes from the Processes dropdown menu. Click twice on the CPU% column header to display in descending order. If you find a process using a large amount of CPU time (>=70,) then select the process and click on the Quit icon in the toolbar. Click on the Force Quit button to kill the process. See if that helps. Be sure to note the name of the runaway process so you can track down the cause of the problem.

Average temp of gpu diode? (web browsing)

i am usually 40-43 C. is that normal? everything else is at 29-31 C.

40-43 is very low temperature, no problem.

Tecra M11-13J Diode GPU Overheat

This probably don't have any effect like every time i phoned to Toshiba technical support.
But, i will try anyway.
I bought a Toshiba M11-13J on August, since then i need to sent him to warranty two times, the first time it was the same problem that was described in topic:
Toshiba Tecra M11 - Random Crashes with Windows 7
The motherboard was substituted.
A week later, the second problem began. I started to hear the fan sniping faster, but the air it was not to hot. I run Toshiba health monitor and i saw that internal system temperature and fan speed it's always above 80%, then i installed Everest that show me the temperatures of some components, one of them it's strangely hot, GPU Diode, without any program running the temperature it's above 80C/90C, and the processor and HD was on de 50C and 35C (approximatively).
After this, i left my pc in warranty again, and one more time, motherboard was substituted.
Again, more or less one week later, the old same problem appeared again, in Toshiba technical support, they did not give any special attention to my problem, they only said to leave my tecra again in warranty, but this time, i cant be without him, i'm in college, i have a lots of works to show in classes and do at home, exams to study, and i have no time to leave him in warranty again with the same problem.
I bought a Tecra because it has suppose a non problem notebook, but i was wrong.
I beg you (Toshiba) to give me an alternative solution to my problem, i think this is inadmissible.
When i'm working, sometimes with programs that wasn't supposed to use image, like matlab when it's doing calculus, the diode GPU reaches more then 125C, and when i'm in classes and i need to have work to give my teacher on the end off the class i cant stop or my grades will be "0" in that works.
The rest of the temperatures stay much below this level, like processor at 75C and HD 30C.
I simply don't no what to do more, i already reboot my notebook, bios it's upgraded.
Solutions Please...
Best regards
Jaime Arajo

Some questions:
1) Are the vents breathing easily? The system may overheat if the vents are blocked.
2) Have you tried removing any dust build up? Try spraying Compressed Air through the Vent.
3) Are you using the standard display driver from the Toshiba Website? Installing other drivers can cause this kind of problem.

What are safe CPU/GPU operating temps?

I'm running BONIC on my new 6 core Mac Pro, 32GB RAM, 1TB storage, dual D700 GPU's and I've been monitoring CPU/GPU temps and fan RPMs using Temp Gauge Pro ... once BONIC gets going you can see all the CPUs maxed out and temps begin to rise... as expected of course, but after about 5 minutes or so the fan is maxing out at 1900 rpm and I see max CPU temps hitting ~92 degrees ... GPUs are running cooler...
is this within the safe operating range ?

I have the base 4 core and with Mac FanConrol I get 60C GPU Diode, 57 CPU Proximity while running Setie@home and Einstein. Fan is 914

GPU temperature limit

I have t61 with Nvidia NVS Quadro 140M GPU. After replacing the motherboard, stress tests (sisoftware sandra, Furmark) on the GPU show temperatures as high as 102C to 107C. Local official service lab claims they dont see any problem. What are the allowed and the expected temperature limits?

I've used also aida64 for the monitoring, and as a stress test run HD 1080p youtube movie (planet earth, great).
Tpfancontrol shows about 6-10C less tha the other applications, for the GPU. It seems that the other applications read the GPU diode, vs. just 'GPU' (I don't know the difference).
When I turn off the tpfancontrol, the fan drops to about 3200 rpm, while when it is on, and the temp is high, the fan goes up to about 4500 rpm.
I'm not going to open the PC, but intend to take it to another service provider, and I'll try to get the pictures there.
Thanks a lot for the help.

3.1Ghz i5 iMac 2011 with OSX Lion GPU running very hot (80C) when running secondary monitor via thunderbolt

Using 3.1Ghz i5 iMac 2011 with 6970M and OSX Lion 10.7, I'm having this temperature issue on the GPU diode where it was hovering around 80C on just normal task (browsing web). From iStat I noticed that the Graphic Module was taking full 33W even though I was just browsing.
But I did have a secondary display running at 1920x1080 via the thunderbolt port. The moment I disconnect it the Graphic Module drop to 15W and the GPU diod drop to around 60C.
So was it caused by the thunderbolt? Why does running external monitor taxing the GPU so much?

Try resetting the SMC and see if that helps. On occasion it takes 2-3 resets for it to "take."
SMC RESET
Shut down the computer.
Unplug the computer's power cord and all peripherals.
Press and hold the power button for 5 seconds.
Release the power button.
Attach the computers power cable.
Press the power button to turn on the computer.
PRAM RESET
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.

A different GPU problem than any I've researched

About 6 weeks ago temperature gauge started giving me warnings that the GPU diode 0 was getting too hot. Usually it gets up to around 260 F. I haven't had any performance issues, but I have to assume this is no bueno. After doing extensive research regarding this issue, I found that most people have had issues caused by their discrete GPU, specifically the AMD Radeon 6750M. This was concerning because that's what my computer has. However I installed Gfxcardstatus and found that the GPU only shows as being excessively hot when using the Intel HD Graphics 3000 GPU. The computer never feels hot, and the fans don't seem to help to control the issue, even after using macs fan control to customize the fan settings. I never do any heavy lifting with my computer, and the heat issue persists no matter what applications I have open or what I'm doing. Is this something to be concerned about? Can this kind of heat coming from the GPU damage other components? Is there any kind of fix I could do to help the issue? I know there's a million threads similar to this, but I felt my issue was different enough to warrant a new thread. It's a 15" Early 2011 MacBook Pro running 10.9.4. Just to reiterate, I have had no display or performance issues associated with this issue, just the excessive heat. Thanks in advance for any advice!
With the AMD GPU
And then the Intel GPU. Both taken seconds apart immediately after switching GPUs

a. Some programs don't seem to work well with opening in the right space (older versions of MS Office come to mind), and this should get better with program updates. As a work around, you can change to the proper space and then open the program while there. The applications from Apple seem to work properly for me. Mail, Address Book, and iCal all open on Space 1 automatically, every time I boot up. FireFox and Safari both open on Space 2 when they are launched. Word and Excel launch on Space 5, while WindowsXP inside Parallels always runs on Space 9 in full screen. For me, this is very organized.
b. I used a couple of different programs to do this same type of multiple desktops approach to working with programs. The last program I used, under Tiger, was Virtue Desktops. It was a little more polished than this original version of Spaces, but we should see improvements by .2 or .3 (Maybe):)
I generally work with 10 to 15 programs running at once, and dual monitors, but even the dual monitors don't allow me to arrange program windows the way I want, or to work with full screen programs like Parallels(WinXP) in a less distracting way. I prefer to have up to 9 desktops (accessible using Cntl + 1 or the number of the Space to quickly change my entire desktop.
Some people are distracted or even confused with the whole Spaces concept while others have been using it with many Linux distros for years. If your brain doesn't wrap around it and enjoy the feature it can easily be turned off in the Spaces preferences, just make sure you delete the program assignments from the preferences first, before you disable the feature. I've read that there have been problems by some people where applications will continue to open in a Space, and the Space isn't available, so nevernever land for it...

Fan issue (gpu related?)

Hi,
I bought an 21,5" iMac i3 3,2ghz, 4gb ram, 1TB hdd, ati radeon hd5670 in December 2010 and i love it (my first mac).
I haven't had any problems at all until a couple of weeks ago when i was playing world of warcraft and the FPS went from 60 to 10 and the fans started to run a bit high. After 30-40 sec the fans and the game went back to normal again for about 3 min then it was full of lag and the fans got going again.
A week after that (i went back playing on my pc for a while because of this) i started WoW again and played for 30 min when the game went unplayable again. But this time the cpu-fan went up to 4000rpm and the optical drive fan to 3600rpm and it never stopped until i shut the computer down.
I searched the internet for similar problems but couldn't find anything related to what i have so i tried sms-reset but with no luck and the apple hardware test said nothing.
3 days ago I decided to give smcfancontrol a try and gave the fans a small boost: Cpu Fan from 1200 up to 2100rpm, the Optical Drive Fan from 999 up to 1850rpm and the Hdd Fan from 1100 up to 1550rpm and this actually worked very well. The temps where low and the gameplay experience where perfect until this morning.
I woke up and turned on the iMac and opened safari when the fans started to blow like crazy and only a shut down could fix it. I run the hardware test and got this message: 4SMC/1/40000000:SMC
I deleted smcfancontrol just in case and tried smc-reset and did the hardware test again and got the same message.
I decided to call Apple for support and they told me to reset the computer to factory-default and i did. The fans blowed like crazy until i got to like 50% of the new install and then they stopped and everything seemed normal after the installation was complete. I ran hardware test and the message was gone. I waited a couple of hours and then i installed WoW again and after 5-10 minutes of gameplay the fans started to go wild again. Another hardware check and the message is there again but after the next re-start its gone.
This is the average temperatures i experience when gaming:
CPU: 58c
HDD: 53c
GPU Diode: 82c
GPU Heatsink: 76c
Powersupply: 80c
Temps seems normal to me.
This is driving me crazy and I can't think of other than this is a hardware problem when the computer have worked just fine until a couple of weeks ago.
Is there someone who have experienced anything like this that can give me a helping hand?

I took my imac to an apple repair-tech Feb 16 and got it back after 1 week and they told me they couldn't find any problems. They even wanted me to pay for the work they did because they said it was related to the software. I even left a BIG note with the computer with the error codes and an explanation of what's going on but they just ignored it and only did Apple hardware test which did not show anything at that moment.
The imac worked fine without problems for 15 days after that and then i have had the same problem every single f***g day, even now when i'm typing this message the fans are nuts.
I can reset it sometimes by restarting, shut down, smc-reset and some apple hardware tests (not kidding, all of these steps several times). It takes about an hour with these steps every day and then it works fine until it goes to sleep or i shut it down then i have to repeat this steps again for an hour to get it back to normal.
I have not installed anything new on the imac since i got it back and i have manually wrote down time, date and error codes on paper every time this happens. I now have 10 pages I even have some screenshots of istat showing temps and fan speeds.
I am going to contact another repair-tech later and show these papers i have written and the screenshots and see i they believe me then. I really hope they do because i'm so sick and tired of this imac now. And it feels really sad that i'm not able to use it as i want to because of this.
As related to my problem i found the apple technician guide for my imac and this is what it says:
"...if a sensor error is detected, AHT will report an error code containing the affected sensor name (ex: “4SNS/1/40000000 TC0H” error codereports to sensor TC0H)."
My sensor is the TS2P and for that the guide says: "Excessive upper internal enclosure temperature, or Bluetooth/camera/sensor damaged/disconnected from top of logic board" and for the Suggested action: "Verify that the Bluetooth/camera/sensor cable is securely connected to the top of the logic board. Replace the cable if damaged"
This means that in my case, its a sensor thats probably loose or broken because both the camera and the bluetooth works fine.
I think it is a shame that I as a consumer is forced to dig out this info on my own from their own Technician Guide.
I let you know what happens when i have contacted the tech.

10.5.3 update - GPU runs hotter

Ran the combo updater on my Alu iMac Core Duo and everything went well -- took only 5 minutes from start to end. No problems since - apart from a couple of small things: my iStat readout tells me that my GPU temps have increased by around 4-5 degrees. GPU, GPU Diode and GPU Heatsink were previously never higher than 52 degrees but they now run at 55, 56 and 56 degrees respectively. Presumably this is because 10.5.3 changes the graphics routines somehow but I hope it won't get any hotter (not that I know how hot is too hot but the fans on this wonderfully quiet iMac have never come on in 6 months and I'd like to keep it that way).
The only other thing I've noticed is this Console message:
31/05/2008 14:43:22 System Preferences[498] Preference bundle "/System/Library/PreferencePanes/PrintAndFax.prefPane" is missing identifier
This was before and after repairing permissions. Anyone know if it's something to worry about? I can print ok, which is a good sign... TIA
Simon

Well, I do not know about your specific problem, but I have learned from these forums about OS updates that I should always:
1.) Note from Software Update that there is a new OS version update, but do NOT download or install from Software Update.
2.) Download the COMBO version of the update from http://www.apple.com/support/downloads/
3.) Using Disk Utility, run Repair Permissions and Verify Disk (and Repair Disk if needed) before the OS upgrade.
4.) Run the OS version upgrade from the downloaded Combo version.
5.) Restart the computer
6.) Using Disk Utility again, run Repair Permissions and Verify Disk (and Repair Disk if needed) before the OS upgrade.
Since you have a Permissions issue on the iCal file. the above routine might solve your problem.
BTW, I have solved problems using that routine even after running an OS version update from Software Update. Running the Combo update on top of the Software Update (incremental) version seems to fix some things that the incremental might have missed; but the key is running Repair Permissions and Disk Repair (if needed) before and after running the Combo update.
Hope this helps. (jk)

-127 GPU Diode...

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