disable HPET , system now works

[ventrical]

I was testing Lubuntu (and other) isos on this one AMD64 bit machine and the USB boot isos would just not boot up. On Lubuntu it booted once, started a hard install and then failed. I was just ready to bin this machine and decided to try and disable HPET (High Precision Event Timer ) and , voila', I have this machine back working again.

[Hazzabin]

Great one mate,

can you tell how you did this if the machine didn't couldn't boot,

I have an old machine that gave me grief I do not know if the issues were the same as you had

[ventrical]

Great one mate,

can you tell how you did this if the machine didn't couldn't boot,

I have an old machine that gave me grief I do not know if the issues were the same as you had

It would boot from some SATA drives I had installed - but then became unstable. The machine booted into BIOS but would not boot USB flash drives. I was using this as a swapper desktop. Go into you BIOS and look for HPET. I have 3 machines and they are all in different spots, Advanced , OnBoard Configuation .. etc.. If you find it , disable it then USBs will boot.

*note*

Having HPET enabled will give the impression that something is wrong with hard drive, power supply or processor. I read up on it and it says that linux had fixed this since 2.6.x-x kernel ??

Hope that helped . If not lemme know.

Regards..

*now off to do a Lubuntu altenate install on an EasyPeasy netbook .. :) lol

[Hazzabin]

"install on an EasyPeasy netbook ." well sure hopes it was easy lol

Thanks mate for the info will give it a try my tomorrow

[kostkon]

3.18 mystery bug that might be related to HPET (http://www.phoronix.com/scan.php?page=news_item&px=MTg3Mzk).

[ventrical]

3.18 mystery bug that might be related to HPET (http://www.phoronix.com/scan.php?page=news_item&px=MTg3Mzk).

Thanks.



The latest belief is the issue might be related to HPET (http://lkml.iu.edu/hypermail/linux/kernel/1412.3/00684.html), the High Precision Event Timer. Yesterday Linus Torvalds posted (http://lkml.iu.edu/hypermail/linux/kernel/1412.3/00703.html) that he agrees it could be HPET related and the cause would likely come down to an actual hardware bug, some SMM/BIOS power management feature causing the problem, a bug in the kernel's clock-source handling, or "gremlins" -- something freakish happening. In a follow up response (http://lkml.iu.edu/hypermail/linux/kernel/1412.3/00707.html), Dave Jones is starting to think it could be due to some BIOS / motherboard error with the Intel server motherboard he's been using given there was a sort of similar bug report from last year. The issue for Dave though only started recently with the kernel, but if it looks to be a hardware issue, the HPET problem wouldn't be investigated further (http://lkml.iu.edu/hypermail/linux/kernel/1412.3/00737.html).


Actually it is very capricious. On some of my earlier vivid ubuntu installs it will declare the BIOS BUG in verbose script before startup. Just never thought much about it. But I'm using 3.16.x-28 kernel so if this is the case it has rolled back all the way there (and also to 14.04.1 lts set.) so it looks to be more serious.

On one of my HPET enabled machines I first:

Changed the memory.
Changed the power supply.
Changed the video adapter.

None of this resolved the problem. Disabled HPET resolves. This is a clankswerks in the classic sense. (Hey Linus .. guess what ..a real clankswerks! member those olde days:) )

Regards..

[ventrical]

HPET is found in:

BIOS/Power/APM Configuration/HPET Support = disabled (should be for fix)

Regards..

This was specifically designed to "Increase the performance of Vista Multimedia Player. Hardware High precision efficient timer can meet Vista's requirement. Suggest to disable this feature if OS in running below XP."