Re: [gentoo-user] MCE in kernel
On 9/3/07, Alan E. Davis [EMAIL PROTECTED] wrote: Thank you. I have solved the problem for now, but live in fear that there is something untoward going in on my hardware. Quite possible. It can also be caused by misconfiguring kernel drivers. I recently (accidently) selected the ATI agpart driver instead of the Intel driver. Most drivers correctly detect when their corresponding device isn't present, but this one gamely tried to manage the AGP bridge and fouled up memory whenever X started... So you may want to review your kernel config and make sure you have all the devices you're attempting to use. -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] MCE in kernel
Thank you. I noticed that when I ran make oldconfig on a new kernel, the configs were not what I'd expected. The wrong CPU type was configured. Alan On 9/5/07, Don Jerman [EMAIL PROTECTED] wrote: On 9/3/07, Alan E. Davis [EMAIL PROTECTED] wrote: Thank you. I have solved the problem for now, but live in fear that there is something untoward going in on my hardware. Quite possible. It can also be caused by misconfiguring kernel drivers. I recently (accidently) selected the ATI agpart driver instead of the Intel driver. Most drivers correctly detect when their corresponding device isn't present, but this one gamely tried to manage the AGP bridge and fouled up memory whenever X started... So you may want to review your kernel config and make sure you have all the devices you're attempting to use. -- [EMAIL PROTECTED] mailing list -- Alan Davis, Kagman High School, Saipan [EMAIL PROTECTED] An inviscid theory of flow renders the screw useless, but the need for one non-existent. ---Lord Raleigh (aka John William Strutt), or else his son,
Re: [gentoo-user] MCE in kernel
On Sat, 1 Sep 2007 11:08:27 +1000 Alan E. Davis [EMAIL PROTECTED] wrote: I have been unable to boot into my gentoo system due to a Machine Check Exception. This is an AMD 64 system. MCE for AMD is enabled in the kernel (2.6.21 gentoo-sources). I am unable to boot in to turn off MCE checking. did you know you can disable this at boot time? Check it out: | $ grep mce /usr/src/linux/Documentation/kernel-parameters.txt | mce [IA-32] Machine Check Exception | nomce [IA-32] Machine Check Exception just add 'nomce' to your kernel boot line in grub and you should be able to boot with MCE turned of to reconfigure. -- Dan -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] MCE in kernel
Thank you. I have solved the problem for now, but live in fear that there is something untoward going in on my hardware. Earlier on, this was intermittent. I also wonder whether a register was set or a cmos flag, because after I booted the Ubuntu partition, the machine did boot with no complaint. It hadn't been going on long, though. Well, I finally was able to boot using an earlier kernel with no MCE flag set, then recompile a newer kernel without it. I think your solution is the better one, though. I did follow the instructions of the boot messages and installed an mce log translation utility, but I didn't make sense of what to do with it. Thank you again, Alan On 9/4/07, Dan Farrell [EMAIL PROTECTED] wrote: On Sat, 1 Sep 2007 11:08:27 +1000 Alan E. Davis [EMAIL PROTECTED] wrote: I have been unable to boot into my gentoo system due to a Machine Check Exception. This is an AMD 64 system. MCE for AMD is enabled in the kernel (2.6.21 gentoo-sources). I am unable to boot in to turn off MCE checking. did you know you can disable this at boot time? Check it out: | $ grep mce /usr/src/linux/Documentation/kernel-parameters.txt | mce [IA-32] Machine Check Exception | nomce [IA-32] Machine Check Exception just add 'nomce' to your kernel boot line in grub and you should be able to boot with MCE turned of to reconfigure. -- Dan -- [EMAIL PROTECTED] mailing list -- Alan Davis, Kagman High School, Saipan [EMAIL PROTECTED] An inviscid theory of flow renders the screw useless, but the need for one non-existent. ---Lord Raleigh (aka John William Strutt), or else his son,
Re: [gentoo-user] MCE in kernel
On Tue, 4 Sep 2007 06:51:38 +1000 Alan E. Davis [EMAIL PROTECTED] wrote: I think your solution is the better one, though. I did follow the instructions of the boot messages and installed an mce log translation utility, but I didn't make sense of what to do with it. The thing is, you are only masking symptoms. There may be something wrong, and perhaps you could save a lot of work later by fixing a problem before it turns catastrophic. from http://en.wikipedia.org/wiki/Machine_Check_Exception A Machine Check Exception, also called MCE, is a computer hardware error which occurs when a computer's central processing unit detects an unrecoverable hardware problem. Normal causes for MCE errors are overheating and/or incorrect hardware installation. Overheating can cause electrons to become more animated and thus escape from the silicon tracks, resulting in corrupted data. Some specific manually induced causes could be: Overclocking (naturally increases heat output) Poorly fitted heatsink/computer fans (the same problem can happen with excessive dust in the CPU fan) Computer software can also cause errors in this way (normally by corrupting data they are reading or writing). For example: -Software performing read or write operations to non-existent memory regions which leads to confusion for the processor and/or the system bus. 3rd party programs mcelog mcelog is a Linux program to decode MCE's on x86-64 processors -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] MCE in kernel
Thank you Dan: I'll look into this. Time to tear the old box apart again. Thank you again. Alan On 9/4/07, Dan Farrell [EMAIL PROTECTED] wrote: On Tue, 4 Sep 2007 06:51:38 +1000 Alan E. Davis [EMAIL PROTECTED] wrote: I think your solution is the better one, though. I did follow the instructions of the boot messages and installed an mce log translation utility, but I didn't make sense of what to do with it. The thing is, you are only masking symptoms. There may be something wrong, and perhaps you could save a lot of work later by fixing a problem before it turns catastrophic. from http://en.wikipedia.org/wiki/Machine_Check_Exception A Machine Check Exception, also called MCE, is a computer hardware error which occurs when a computer's central processing unit detects an unrecoverable hardware problem. Normal causes for MCE errors are overheating and/or incorrect hardware installation. Overheating can cause electrons to become more animated and thus escape from the silicon tracks, resulting in corrupted data. Some specific manually induced causes could be: Overclocking (naturally increases heat output) Poorly fitted heatsink/computer fans (the same problem can happen with excessive dust in the CPU fan) Computer software can also cause errors in this way (normally by corrupting data they are reading or writing). For example: -Software performing read or write operations to non-existent memory regions which leads to confusion for the processor and/or the system bus. 3rd party programs mcelog mcelog is a Linux program to decode MCE's on x86-64 processors -- [EMAIL PROTECTED] mailing list -- Alan Davis, Kagman High School, Saipan [EMAIL PROTECTED] An inviscid theory of flow renders the screw useless, but the need for one non-existent. ---Lord Raleigh (aka John William Strutt), or else his son,
[gentoo-user] MCE in kernel
I have been unable to boot into my gentoo system due to a Machine Check Exception. This is an AMD 64 system. MCE for AMD is enabled in the kernel (2.6.21 gentoo-sources). I am unable to boot in to turn off MCE checking. I was able to log in by single user mode. The MCE happens at the end of the loading of default scripts, at least this is what I am seeing on the screen: xdm has been loaded. The problem is, I have been installing ubuntu on another partition, and it boots fine. If I have it right, I can download a gentoo live install disk and compile a new kernel. Is there a howto on this specific problem? Thank you, Alan Davis -- Alan Davis, Kagman High School, Saipan [EMAIL PROTECTED] An inviscid theory of flow renders the screw useless, but the need for one non-existent. ---Lord Raleigh (aka John William Strutt), or else his son,
