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    SubjectX freezes kernel during exit [Re: 2.6.23-rc3-mm1]
    Andrew Morton napsal(a):
    > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.23-rc3/2.6.23-rc3-mm1/

    Hi,

    I've found a regression against 2.6.23-rc2-mm2. X server shutdown freezes
    (untainted) kernel hardly. Nothing on netconsole, X output follows:


    X Window System Version 1.3.0
    Release Date: 19 April 2007
    X Protocol Version 11, Revision 0, Release 1.3
    Build Operating System: Fedora Core 7 Red Hat, Inc.
    Current Operating System: Linux bellona 2.6.23-rc3-mm1 #315 SMP Wed Aug 22
    21:43:06 CEST 2007 i686
    Build Date: 11 June 2007
    Build ID: xorg-x11-server 1.3.0.0-9.fc7
    Before reporting problems, check http://wiki.x.org
    to make sure that you have the latest version.
    Module Loader present
    Markers: (--) probed, (**) from config file, (==) default setting,
    (++) from command line, (!!) notice, (II) informational,
    (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
    (==) Log file: "/var/log/Xorg.0.log", Time: Sun Aug 26 14:22:43 2007
    (==) Using config file: "/etc/X11/xorg.conf"
    (WW) RADEON: No matching Device section for instance (BusID PCI:1:0:1) found
    (**) RADEON(0): RADEONPreInit
    (II) Module already built-in
    (II) Module already built-in
    (II) Module already built-in
    (**) RADEON(0): RADEONScreenInit f0000000 0
    (**) RADEON(0): Map: 0xf0000000, 0x04000000
    (**) RADEON(0): RADEONSave
    (**) RADEON(0): RADEONSaveMode(0x8240870)
    (**) RADEON(0): Read: 0x0000000c 0x00030065 0x00000000
    (**) RADEON(0): Read: rd=12, fd=101, pd=3
    (**) RADEON(0): RADEONSaveMode returns 0x8240870
    (**) RADEON(0): DRI New memory map param
    (**) RADEON(0): RADEONInitMemoryMap() :
    (**) RADEON(0): mem_size : 0x04000000
    (**) RADEON(0): MC_FB_LOCATION : 0xf3fff000
    (**) RADEON(0): MC_AGP_LOCATION : 0xffffffc0
    (**) RADEON(0): RADEONModeInit()
    1280x1024 108.00 1280 1328 1440 1688 1024 1025 1028 1066 (24,32) +H +V
    1280x1024 108.00 1280 1328 1440 1688 1024 1025 1028 1066 (24,32) +H +V
    (**) RADEON(0): Pitch = 10485920 bytes (virtualX = 1280, displayWidth = 1280)
    (**) RADEON(0): dc=10800, of=21600, fd=96, pd=2
    (**) RADEON(0): RADEONInit returns 0x8241220
    (**) RADEON(0): RADEONRestoreMode()
    (**) RADEON(0): RADEONRestoreMode(0x8241220)
    (**) RADEON(0): RADEONRestoreMemMapRegisters() :
    (**) RADEON(0): MC_FB_LOCATION : 0xf3fff000
    (**) RADEON(0): MC_AGP_LOCATION : 0xffffffc0
    (**) RADEON(0): Map Changed ! Applying ...
    (**) RADEON(0): Map applied, resetting engine ...
    (**) RADEON(0): Updating display base addresses...
    (**) RADEON(0): Memory map updated.
    (**) RADEON(0): Programming CRTC1, offset: 0x00000000
    (**) RADEON(0): Wrote: 0x0000000c 0x00010060 0x00000000 (0x0000a400)
    (**) RADEON(0): Wrote: rd=12, fd=96, pd=1
    (**) RADEON(0): GRPH_BUFFER_CNTL from 20205c5c to 20125c5c
    (**) RADEON(0): RADEONSaveScreen(0)
    (**) RADEON(0): Setting up initial surfaces
    (**) RADEON(0): Initializing fb layer
    (**) RADEON(0): Setting up accel memmap
    (**) RADEON(0): Initializing backing store
    (**) RADEON(0): DRI Finishing init !
    (**) RADEON(0): EngineRestore (32/32)
    (**) RADEON(0): GRPH_BUFFER_CNTL from 20205c5c to 20125c5c
    (**) RADEON(0): Setting up final surfaces
    (**) RADEON(0): Initializing Acceleration
    (**) RADEON(0): EngineInit (32/32)
    (**) RADEON(0): Pitch for acceleration = 160
    (**) RADEON(0): EngineRestore (32/32)
    (**) RADEON(0): Initializing DPMS
    (**) RADEON(0): Initializing Cursor
    (**) RADEON(0): Initializing color map
    (**) RADEON(0): Initializing DGA
    (**) RADEON(0): Initializing Xv
    (**) RADEON(0): RADEONScreenInit finished
    (**) RADEON(0): RADEONSaveScreen(2)
    (**) RADEON(0): RADEONCloseScreen
    (**) RADEON(0): RADEONDRIStop
    (**) RADEON(0): EngineRestore (32/32)
    (**) RADEON(0): RADEONDisplayPowerManagementSet(0,0x0)
    (**) RADEON(0): RADEONRestore
    (**) RADEON(0): RADEONRestoreMode()
    (**) RADEON(0): RADEONRestoreMode(0x8240870)
    (**) RADEON(0): RADEONRestoreMemMapRegisters() :
    (**) RADEON(0): MC_FB_LOCATION : 0x1fff0000
    (**) RADEON(0): MC_AGP_LOCATION : 0x27ff2000
    (**) RADEON(0): Map Changed ! Applying ...
    (**) RADEON(0): Map applied, resetting engine ...
    (**) RADEON(0): Updating display base addresses...
    (**) RADEON(0): Memory map updated.
    (**) RADEON(0): Programming CRTC1, offset: 0x00000000
    (**) RADEON(0): Wrote: 0x0000000c 0x00030065 0x00000000 (0x0000a400)
    (**) RADEON(0): Wrote: rd=12, fd=101, pd=3
    (**) RADEON(0): Disposing accel...
    (**) RADEON(0): Disposing cusor info
    (**) RADEON(0): Disposing DGA
    (**) RADEON(0): Unmapping memory
    (**) RADEON(0): RADEONDRICloseScreen



    the only difference is, that 2.6.23-rc2-mm2 writes further

    FreeFontPath: FPE "/usr/share/X11/fonts/misc:unscaled" refcount is 2, should be
    1; fixing.

    and exits succesfully (note that these messages are taken on remote host, X
    runned remotely).

    Both vesa and radeon + Option "NoAccel" "true" works obviously fine.

    regards,
    --
    Jiri Slaby (jirislaby@gmail.com)
    Faculty of Informatics, Masaryk University

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