35 lines
1.5 KiB
Text
35 lines
1.5 KiB
Text
2010-12-14 Colin Watson <cjwatson@ubuntu.com>
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Preferred resolution detection for VBE.
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* grub-core/video/video.c (grub_video_edid_checksum): New function.
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(grub_video_get_edid): Likewise.
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(grub_video_edid_preferred_mode): Likewise. Try EDID followed by
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the Flat Panel extension, in line with the X.org VESA driver.
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* grub-core/video/i386/pc/vbe.c (grub_vbe_bios_get_flat_panel_info):
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New function.
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(grub_vbe_bios_get_ddc_capabilities): Likewise.
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(grub_vbe_bios_read_edid): Likewise.
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(grub_vbe_get_preferred_mode): Likewise.
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(grub_video_vbe_setup): When the mode is "auto", try to get the
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preferred mode from VBE, and use the largest mode that is no larger
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than the preferred mode (some BIOSes expose a preferred mode that is
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not in their mode list!). If this fails, fall back to 640x480 as a
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safe conservative choice.
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(grub_video_vbe_get_edid): New function.
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(grub_video_vbe_adapter): Add get_edid.
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* include/grub/video.h (struct grub_vbe_edid_info): New structure.
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(grub_video_edid_checksum): Add prototype.
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(grub_video_get_edid): Likewise.
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(grub_video_edid_preferred_mode): Likewise.
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* include/grub/i386/pc/vbe.h (struct grub_vbe_flat_panel_info): New
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structure.
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(grub_vbe_bios_get_flat_panel_info): Add prototype.
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(grub_vbe_bios_get_ddc_capabilities): Likewise.
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(grub_vbe_bios_read_edid): Likewise.
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* grub-core/commands/videoinfo.c (print_edid): New function.
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(grub_cmd_videoinfo): Print EDID if available.
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* util/grub.d/00_header.in (GRUB_GFXMODE): Default to "auto". This
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is more appropriate on a wider range of platforms than 640x480.
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