[Bug 104139] [CFL] Screen goes blank right after boot.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104139

--- Comment #21 from Kai-Heng Feng <kai.heng.feng at canonical.com> ---
(In reply to Jani Nikula from comment #20)
> (In reply to Kai-Heng Feng from comment #8)
> > Also, this issue only happens when "Legacy ROM boot support" is enabled.
> 
> Are you saying you're legacy booting instead of UEFI?

No, the system in question still boots under UEFI mode.

When BIOS option "Legacy ROM boot support" is checked, the system support to
boot under both legacy and UEFI mode. But we still boot the system through
UEFI.

> 
> If the laptop came with preinstalled Windows and UEFI boot, all bets are off
> when you try to use legacy bios boot with Linux. It's likely the VBT is
> *different* for UEFI and legacy boot, and typically the legacy boot one
> wasn't even tested.

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