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Mac Forum / Applications / Virtual PC / September 2005OS X crash
Once again the combination of XP / VPC7.02 / Tiger 10.4.2 has resulted in an OS X crash for me. After getting XP to connect to the internet (see notes about MTU below) I was trying to install Newsstand Reader to view a trial subscription to Nature. OS X gave me the message that I needed to restart my computer by pressing the power button. 10.4.3 where are you? Michael Paine Try adding the Virtual PC List folder in the 'privacy' section of Spotlight. That prevents spotlight from trying to index Windows. It may not prevent ALL kernel crashes, but it certainly help me. BTW, MS and Apple are working on it and the fix will come in an Apple update....not in a Virtual PC update. Thanks Paul. I will give it a go. I hadn't looked at the Spotlight privacy settings (System Preferences/Spotlight/Privacy) until now. I will add a few other folders that never need indexing as well - including the external hard drive I use for backup purposes and video editing. Mike > Try adding the Virtual PC List folder in the 'privacy' section of > Spotlight. That prevents spotlight from trying to index Windows. It may > not prevent ALL kernel crashes, but it certainly help me. > > BTW, MS and Apple are working on it and the fix will come in an Apple > update....not in a Virtual PC update. Let us know the results, Mike. If that stops your Kernel Panics, it may be something for Microsoft and Apple to take a serious look at. Paul, Thanks for your hints. I did the Spotlight privacy thing, and it seemed to help, but I still do get the Kernel Panics periodically. Seems to be occuring now when I quit VPC, but not exclusively. Jim There's no real harm in telling spotlight not to catelog your VPC images, seeing as how it won't show you the contents of the disk image anyhow. If this is a problem with OS X 10.4.2, why is it that only VPC 7.0.2 is affected? I too am having the same crashing ( as in the entire Mac OS crashing, not just VPC ) when running the combination of VPC 7.0.2 and OS X 10.4.2. Sometimes VPC will run ok for a couple of hours, sometimes only a few minutes. I've just read on the Apple Discussion OS X Tiger forum that the problems with kernel panics and VPC 7.0.2 and OS X 10.4.2 can be 'fixed' by uninstalling VPC ( from the Uninstaller on the CD ), reinstalling and then reapplying the 7.0.2 patch. Seems there is a problem if you already had 7.0.2 installed before the 10.4.2 OS X update. Has anyone tried this? Did it 'solve' the kernel panic issues with VPC 7.0.2 for you? Well it's nice to see (I guess!) that I'm not the only one having Kernel Panics. Current system: PowerBook 15, 1.67, 256 memory, OS 10.4.2, VPC 7.0.2 Let's hope Apple or MS fixes the bloody thing! JB Hey, JB The fact that you have VPC7.0.2 running at all is a minor miracle in itself. You do know that VPC7 requires a minimum of 512MB RAM, right? Yours must be running slower than cold molasses My mistake, I had 512mb when I posted. Five minutes ago I just installed another 512mb, bringing my Powerbook to 1gb. I haven't tested whether things are much faster yet. I'd run VPC to see how much faster it is with the extra ram but I really don't want a kernel panic "attack". Anyway, I sure hope Apple fixes this VPC with the latest update. Sort of bummed that such an expensive program is rendered useless at this stage. Cheers, JB Since I uninstalled VPC 7.0.2 using the uninstaller on the VPC CD, then re-installed it and applied the 7.0.2 patch, I haven't had a kernel panic. This 'tip' came indirectly from Microsoft Tech support, seems that this is what you have to do if you upgraded to OS X 10.4.2 after installing VPC 7.0.2. Try it and see. Thanks for the tip Steve. I'll give it a try, don't have much to lose as VPC is only taking up hard drive space and not doing anything else. And thanks to all for posting on this link, I appreciate it! :-) Am 25.09.2005 4:06 Uhr schrieb "Nardman" unter <johnbernardo@gmail.com> in 1127613978.747233.46680@g47g2000cwa.googlegroups.com: > Thanks for the tip Steve. I'll give it a try, don't have much to lose > as VPC is only taking up hard drive space and not doing anything else. > > And thanks to all for posting on this link, I appreciate it! :-) I've reinstalled VPC, Patch and Office 2003 several times. Yet Kernel Panics happen. You mention that you reinstalled VPC... did you first uninstall it with the utility on the VPC install disk? Just reinstalling it as you mention wont fix the problem. Don't bother... this trick does not work in resolving the problem. I say this because I have Spotlight ignore my Virual PC List and my PC shared files directories, and my OS still crashed. > Try adding the Virtual PC List folder in the 'privacy' section of > Spotlight. That prevents spotlight from trying to index Windows. It may > not prevent ALL kernel crashes, but it certainly help me. > > BTW, MS and Apple are working on it and the fix will come in an Apple > update....not in a Virtual PC update. -- -- tonza Heh! I am starting to wonder what is going on, but there is one common symptom regarding this crashing thing in Mac OS X 10.4.2 and VPC 7.0.2: page-outs have occurred in the past. My theory about this issue is that Virtual PC does not respond well to page-ins, causing the kernel or kernel extension (it's hard to determine where) to fail on a double-page-fault, or on a page which has not been mapped to physical memory. So the only guarantee you have in preventing Virtual PC from tripping is to make sure you have enough RAM in your Mac to support the required size VM you want, and other Macintosh apps you want, without inducing a page fault (pageouts = 0) at the time Virtual PC is actually scheduled to run. That's my observation anyway. > Once again the combination of XP / VPC7.02 / Tiger 10.4.2 has resulted in > an OS X crash for me. After getting XP to connect to the internet (see [quoted text clipped - 5 lines] > > Michael Paine Who wants to make a bet that 10.4.3 fixes, or doesn't fix the problem?! Bets anyone? -- -- tonza That would match what I'm seeing, seeing as how I see kernel panics more under low memory conditions, but it could just as easily be an issue with the Tiger kernel... I've seen this happen when VPC had not even been launched since the last reboot. How about trying the uninstaller on the original CD, then re-installing VPC and applying the 7.0.2 patch. After I tried this I haven't had the kernel panics. This 'tip' apparently comes from Microsoft Technical support. If you do this, is there a way to restore all the stuff now installed on the Guest XP without reinstalling apps like Excel, etc? Could I just save a backup copy of the Windows XP file (Windows XP Professional.vpc7) that's in the Application folder now, and substitute it for whatever the VPC re-install puts there? (I'd like to preserve all the Desktop files and Directories on "My Computer" in XP) If you use the uninstaller on the original CD, it will remove the Virtual PC application. It does not remove the virtual machine (Windows). However, it's always a good idea to save a copy of Windows for backup. A complete uninstall is a misnomer. The uninstaller never removes customer documents, which in VPC's case, means that it does not remove the drive image. Your copy of Windows with all of the software installed will not be touched. And my experience regarding the kernel panics does not match Steve's or PSS statements, which is to say that it didn't work for me. Of course, there are a number of different kernel panics, so they are likely to have different causes. The most common one seems to be related to pageouts in low memory conditions... and that one's more likely to be fixed by Apple than MS. FWIW, I have experienced kernel panics with ONLY VPC 7.0.2 and OS X 10.4.2 Finder running. I have 1.25Gb Powerbook G4 and my guest OS is using only 256mb of RAM. That leaves 1Gb free for OS X and VPC to co-exist. The other correllating factor is that the panics occur more frequently for me with Virtual Switch than Shared Networking. I did have one panic occur this last weekend using Shared Networking while being connected over a bluetooth modem in my mobile phone. The only apps running then were Mail, Finder and VPC 7.0.2 on OS X 10.4.2 Richard > And my experience regarding the kernel panics does not match Steve's or > PSS statements, which is to say that it didn't work for me. Of course, > there are a number of different kernel panics, so they are likely to > have different causes. The most common one seems to be related to > pageouts in low memory conditions... and that one's more likely to be > fixed by Apple than MS. > The other correllating factor is that the panics occur more frequently for me > with Virtual Switch than Shared Networking. I did have one panic occur this > last weekend using Shared Networking while being connected over a bluetooth > modem in my mobile phone. The only apps running then were Mail, Finder > and VPC 7.0.2 on OS X 10.4.2 That'd be right... Virtual Networking is implemented via a kernel extension in Mac OS X.  Signature-- tonza. |
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