Public bug reported:
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.
** Affects: grub2 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1734278
Title:
Grub2 cannot boot up when 8254 time function disable
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