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Re: [Dri-devel] Hard lockup switching between xservers on different VTs
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From: Eric A. <et...@lc...> - 2003-11-06 04:50:39
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On Wed, 2003-11-05 at 05:07, Felix K=FChling wrote: > Hi, >=20 > I get hard lockups when switching from a second Xserver (:1) started on > vt8 back to the first one (:0) on vt7. It happens on VT switches as > well as when the second Xserver exits. Sysrq keys don't work, and the > machine doesn't respond to ping any more. I had a look at the > XFree86.1.log from the second Xserver. This looks surprising to me: >=20 > ... > drmOpenDevice: node name is /dev/dri/card0 > drmOpenDevice: open result is 9, (OK) > drmOpenDevice: node name is /dev/dri/card0 > drmOpenDevice: open result is 9, (OK) > drmOpenByBusid: Searching for BusID pci:0000:01:00.0 > drmOpenDevice: node name is /dev/dri/card0 > drmOpenDevice: open result is 9, (OK) > drmOpenByBusid: drmOpenMinor returns 9 > drmOpenByBusid: drmGetBusid reports pci:0000:01:00.0 > (II) RADEON(0): [drm] DRM interface version 1.1 > (II) RADEON(0): [drm] created "radeon" driver at busid "pci:0000:01:00.0" > (II) RADEON(0): [drm] added 8192 byte SAREA at 0xd8f7e000 > (II) RADEON(0): [drm] mapped SAREA 0xd8f7e000 to 0x40012000 > (II) RADEON(0): [drm] framebuffer handle =3D 0xd0000000 > (II) RADEON(0): [drm] added 1 reserved context for kernel > (WW) RADEON(0): [agp] AGP not available > (II) RADEON(0): [drm] removed 1 reserved context for kernel > (II) RADEON(0): [drm] unmapping 8192 bytes of SAREA 0xd8f7e000 at 0x40012= 000 > ... >=20 > IIRC the old behaviour was that the second Xserver couldn't open the DRM > in the first place. Now it opens the DRM but fails because AGP is not > available (it was available to the first Xserver, though). Does anyone > know for sure? Eric, could this be related to your latest DRM changes? It should be fixed now. The 2nd server, by addmapping the SAREA, was setting dev->lock.hw_lock to its SHM area and breaking the 1st server's locking. Now, the addmap attept by the 2nd server will fail, and that server will not initialize the DRI. --=20 Eric Anholt et...@lc... =20 http://people.freebsd.org/~anholt/ anholt@FreeBSD.org |