11 Sep
2013
11 Sep
'13
8:45 a.m.
On Wed, 2013-09-11 at 11:45 +0300, Jani Nikula wrote:
Before plunging forward, have you observed any difference between the boot modes? We have reports [1] that the backlight behaviour is different with UEFI vs. UEFI+CSM or legacy boot. So I'm wondering if the acpi_gbl_osi_data >= ACPI_OSI_WIN_8 check in patch 2/2 is the whole story.
Further, if we tell the BIOS we're Windows 8 to use the tested BIOS code paths, what guarantees do we have of UEFI+CSM or legacy boots working?
We have no evidence of Windows behaving differently based on the exposed firmware type.
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Matthew Garrett matthew.garrett@nebula.com