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pkg/42610: sysutils/libpciaccess doesn't enable dma

>Number:         42610
>Category:       pkg
>Synopsis:       sysutils/libpciaccess doesn't enable dma
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Jan 12 10:05:00 +0000 2010
>Release:        NetBSD-current
Matthias Pfaller                            Software Entwicklung
marco Systemanalyse und Entwicklung GmbH    Tel   +49 8131 5161 41
Hans-Böckler-Str. 2, D 85221 Dachau         Fax   +49 8131 5161 66                        Email
System: NetBSD slug 5.99.23 NetBSD 5.99.23 (SLUG) #42 Sun Jan 10 17:36:27 CET 
2010  leo@slug:/usr/src/sys/arch/i386/compile/SLUG i386
Architecture: i386
Machine: i386
        drm with modular-xorg-server doesn't work on intel i945 (at least with
        some bios releases). This is because the bios doesn't enable busmaster
        dma for the graphics board. In NetBSD-5 and NetBSD-current xsrc
        xsrc/external/libpciaccess/dist/src/netbsd_pci.c turns on busmaster
        dma. After dropping xsrc/external/libpciaccess/dist/src/netbsd_pci.c 
        into sysutils/libpciaccess/work.i386 and reinstalling libpciaccess
        drm works with modular-xorg-server.
        Try to use drm on an optiplex 755mt and watch a black screen.
        patch netbsd_pci.c in the same way as in xsrc.


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