From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Sun, 16 Aug 2009 16:41:02 -1000
From: Tim Newsham <newsham@lava.net>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
In-Reply-To: <Pine.BSI.4.64.0908161029370.12479@malasada.lava.net>
Message-ID: <Pine.BSI.4.64.0908161637400.12479@malasada.lava.net>
References: <Pine.BSI.4.64.0908161029370.12479@malasada.lava.net>
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Subject: Re: [9fans] vga and vmware
Topicbox-Message-UUID: 4bf3066e-ead5-11e9-9d60-3106f5b1d025

> When booting plan9 in vmware the graphics seem to work fine up
> to 1024x768x8, but higher resolutions cause a panic trying to
[...]
> panic: kernel fault: bad address pc=0xf01eb43e addr=0xe03c0000
> panic: kernel fault: bad address pc=0xf01eb43e addr=0xe03c0000

/dev/vgactl says 0xe0000000 has 0x3c0000 mapped.  Enough for
1024x768x4 bytes but not enoug hfor 1280x1024x4 bytes.  I
patched vgavmware.c line 179 to allocate 2*vmrd(vm, Rfbsize)
instead of vmrd(vm, Rfbsize) and now I'm able to go into 1280x1024x8
mode.  This is obviously just a hack, I don't know what a
real solution would be (is it possible that the hardware register
returns a different size after changing the mode?)

Tim Newsham
http://www.thenewsh.com/~newsham/