Date: Sat, 22 Mar 2008 23:20:46 -0800 (AKDT) From: peter stern <pstern@65north.com> To: Warren Block <wblock@wonkity.com> Cc: freebsd-x11@freebsd.org Subject: Re: recovering from the 6.3 xorg mess Message-ID: <20080322231210.S9164@jago.65north.com> In-Reply-To: <alpine.BSF.1.10.0803200940320.235@wonkity.com> References: <20080319201202.B15562@jago.65north.com> <alpine.BSF.1.10.0803200940320.235@wonkity.com>
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On Thu, 20 Mar 2008, Warren Block wrote: > On Wed, 19 Mar 2008, peter stern wrote: > >> 14 found these disturbing entries in Xorg.0.log >> >> (--) MGA(0): BIOS at 0xF7000000 >> Requesting insufficient memory window!: start: 0xf6800000 end: 0xf77fffff >> size 0x2000000 >> (EE) Cannot find empty range to map base to >> (WW) MGA(0): Video BIOS info block not detected! > > It's a bug/problem with the way historical X tries to read the video BIOS. > In the past, it really didn't matter, everything still worked. > In fact, it still may work with the mga 1.4.7 driver in ports. > > Newer versions of Xorg made more radical changes, and xorg-7.3 in particular. > Experimental versions of the latest mga driver (1.9.100) really want to read > the BIOS in order to support features like dual monitors. Based on how it > works in Linux, and how it will be done in future versions of xorg, here's a > patch for xorg-server under 6-STABLE: > > http://wonkity.com/~wblock/mgapatch/xorg-patch.txt > > If you only have one monitor, you can use the mga 1.4.7 driver from ports, > which will also take modelines. The 1.9.99 and 1.9.100 versions allow two > monitors but apparently ignore modelines. > >> Just how badly broken has the video-mga device gotten in FreeBSD. > > Reading the video BIOS under FreeBSD can be fixed temporarily with the patch > above. Upcoming versions of xorg will fix it internally. > > Otherwise, problems with the mga driver are probably not specific to FreeBSD. > > -Warren Block * Rapid City, South Dakota USA > The mga in ports reports as 1.9.1. It doesn't work properly. I did a deinstall followed by a reinstall and it remains broken. I went to x.org and grabbed the 1.4.6.1 source. I installed that and now x seems to be working properly. startx starts up in the default resolution listed in xorg.conf and x responds to keyboard change of mode lines. Is there an easy way to determine the version number of the driver? I am now curious what version is being using in Slackware 12 and OpenBSD 4.2 which both work properly. I still want to know why the x-developer 6.3 installation had no input-mouse or input-keyboard devices. Why was a broken mga driver shipped with no warning it was broken? I am getting the impression the x in 6.3 was not very well tested. Thanks for your explanations and suggestions. peter
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