https://bugzilla.novell.com/show_bug.cgi?id=675793
https://bugzilla.novell.com/show_bug.cgi?id=675793#c9
Felix Miata changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|Bootloader |Bootloader
Product|openSUSE 11.4 |openSUSE 12.1
--- Comment #9 from Felix Miata 2011-06-09 03:34:56 UTC ---
vga= on cmdline works at all with KMS kernels only for the virtual consoles,
and only for two situations:
1-nomodeset or equivalent is necessarily also on cmdline (KMS disabled)
2-gfxchips unsupported by KMS (those other than AMD/Radeon, Intel, NVidia, e.g.
RivaTNT, R128 or MGA)
In contrast, for gfxchips supported by KMS, video= on cmdline may be
appropriate:
1-if display EDID is unusable (consoles fall back to 1024x768 or less), or
2-if KMS mode choice produces console text size user deems inappropriate (too
large, or worse but more common, too small)
An example of #2 I run into repeatedly is use of a CRT that supports up to
2048x1536 but prefers mode 1600x1200. Even 1600x1200 produces unusably small
text for my use. Absent an alteration of CONSOLE_FONT in
/etc/sysconfig/console, the size I prefer requires video=1152x864 on cmdline if
connected to a KMS-supported video chip.
VGA= now represents a legacy option. If it is to be retained in YaST's boot
loader section management, it should be accompanied by corresponding video=
selections required for use with KMS-supported gfxchips to produce console
video results comparable to legacy modes with non-KMS-supported chips. Going
this route would mean the "VGA Mode" label would no longer be inappropriate.
The best recommendation I can think of for a replacement would be "Virtual
Console Video Mode".
The select list could be populated with both types of modes. Alternatively,
YaST could check if the gfxchip found is supported by KMS, and offer only
video= modes if yes, and only vga= modes if not. An alternate route would be
eliminating virtual console video mode management from YaST altogether, not
what I would prefer. Yet another alternate might be a select list for a font to
substitute for the default for CONSOLE_FONT, or a smallest, smaller, medium,
larger, largest type list to choose from. Recent Fedora installations on my
machines are including "SYSFONT=latarcyrheb-sun16" on Grub kernel lines, which
looks to me like Fedora may be applying a CONSOLE_FONT-type route to managing
virtual console text size.
In any event, YaST should no longer preselect a vga= mode based upon the
cmdline that started YaST's installation mode, nor necessarily strip one from
"Optional Kernel Command Line Parameter" if one was used for installation,
reason being that apparently the installation kernel is not KMS enabled, with
the consequence that the desired cmdline video option for installation likely
will be different from that desired for subsequent normal use.
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