[Bug 1734278] Re: Grub2 cannot boot up when 8254 time function disable
Anthony Wong
anthony.wong at ubuntu.com
Fri Dec 1 05:44:51 UTC 2017
I have pinged cyphermox on irc to apply the patch in #1 to Xenial.
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https://bugs.launchpad.net/bugs/1734278
Title:
Grub2 cannot boot up when 8254 time function disable
Status in HWE Next:
Triaged
Status in OEM Priority Project:
Triaged
Status in grub2 package in Ubuntu:
Triaged
Status in grub2 package in Debian:
Unknown
Status in grub2 package in Fedora:
Confirmed
Bug description:
Fail to boot into Ubuntu GRUB on the platforms which legacy(8254) timer function is disabled.
"8254 clock gating" is provided to disable 8254 timer to get rid of legacy and save power. The platforms with the firmware which disable the 8254 timer will fail to boot up and block on grub2 which uses the 8254 timer to calibrate the TSC.
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