On Wed, Apr 16, 2014 at 04:00:07PM -0700, H. Peter Anvin wrote: > On 04/16/2014 03:47 PM, Kevin O'Connor wrote: > > On Wed, Apr 16, 2014 at 06:56:57PM +0200, Gerd Hoffmann wrote: > >> Emulating attributes would be great so you can actually navigate > >> bootloader menus. > > > > I took a look a closer look at this. Some things I found: > > > > - it looks like the syslinux menu on recent Fedora versions doesn't > > work correctly at all in text mode. This can be most easily seen by > > disabling CONFIG_VGA_VBE on one of the standard qemu seavgabios > > builds - without vbe syslinux wont go into graphics mode and the > > same broken text menu is shown. So, this isn't a seavgabios issue > > but a fedora and/or syslinux issue. > > > > ?! I would love more details...
If I build SeaVGABIOS without vesa and run the Fedora 16 (or later) installer in qemu I get a menu that is not centered and the bottom line of the menu box isn't drawn. Also, when I hit up arrow or down arrow I can't see which menu item is highlighted. I'm really not sure if this is syslinux related though. (This wasn't an issue in Fedora 15 or earlier - though they always show up as black-and-white.) See the attached screenshot as an example. Steps to reproduce - grab latest seabios from git://git.seabios.org/seabios.git , run "make menuconfig" and select CONFIG_VGA_CIRRUS=y and CONFIG_VGA_VBE=n. Then run "make", then "mkdir qemutest; cp out/bios.bin qemutest/; cp out/vgabios.bin qemutest/vgabios-cirrus.bin". Then run qemu with: qemu-system-i386 -L qemutest/ -m 512 -cdrom Fedora-19-x86_64-DVD.iso > > - I took a quick look at what happens with the ati vgabios on my > > e350m1 if it is forced into a graphics mode (eg, mode 0x12). I see > > similar results to what I see with coreboot native seavgabios. So, > > it looks like most of our troubles are with the standard vgabios > > interface in graphics vs text mode and not something specific to > > seavgabios. That section of my email was not related to syslinux. As background, we're looking into ways to run standard boot loaders with only a graphical framebuffer by emulating text mode on top of a graphical framebuffer. The section above was discussing how the vgabios interprets certain calls differently depending on whether it is text or graphics mode. -Kevin
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