Public bug reported:
Binary package hint: xserver-xorg-video-ati
I have the following setup: LVDS is my notebook display (1280x800),
VGA-0 is a LCD TV connected via a regular VGA monitor cable, capable of
displaying 1360x768. When performing boot by turning the computer on,
the driver freezes (hard freeze, even sysrq keys do not work) before
X/gdm is started. When I boot with the TV unplugged, X/gdm starts
correctly. Then I plug the TV in and restart X (Ctrl+Alt+Backspace) and
both displays works correctly. I tried to toy a bit with Xorg config,
set XAA/EXA to no avail.
Description: Ubuntu intrepid (development branch)
Release: 8.10
xserver-xorg-video-radeon 1:6.9.0-1ubuntu3
card: 01:05.0 VGA compatible controller: ATI Technologies Inc RS485 [Radeon
Xpress 1100 IGP]
May be unrelated, but dmesg shows some interesting stacktrace:
[ 16.826602] ACPI: device:23 is registered as cooling_device1
[ 16.826840] input: Video Bus as /class/input/input6
[ 16.856094] ACPI: Video Device [VGA] (multi-head: yes rom: no post: no)
[ 16.856165] proc_dir_entry 'VGA' already registered
[ 16.856208] Pid: 3134, comm: modprobe Not tainted 2.6.26-5-generic #1
[ 16.856251]
[ 16.856252] Call Trace:
[ 16.856335] [<ffffffff8037d123>] ? idr_get_new+0x13/0x40
[ 16.856388] [<ffffffff8031bfbc>] proc_register+0x19c/0x1d0
[ 16.856434] [<ffffffff8031c20d>] proc_mkdir_mode+0x3d/0x60
[ 16.856478] [<ffffffff8031c241>] proc_mkdir+0x11/0x20
[ 16.856524] [<ffffffffa0233c94>] :video:acpi_video_bus_add_fs+0x28/0x194
[ 16.856571] [<ffffffffa023510f>] :video:acpi_video_bus_add+0xed/0x30e
[ 16.856618] [<ffffffff803c3a12>] acpi_device_probe+0x49/0x8c
[ 16.856663] [<ffffffff803fa94d>] really_probe+0x6d/0x1a0
[ 16.856708] [<ffffffff803faacb>] driver_probe_device+0x4b/0x60
[ 16.856752] [<ffffffff803fab6b>] __driver_attach+0x8b/0x90
[ 16.856796] [<ffffffff803faae0>] ? __driver_attach+0x0/0x90
[ 16.856839] [<ffffffff803fa13b>] bus_for_each_dev+0x6b/0xa0
[ 16.856883] [<ffffffff802c4664>] ? kmem_cache_alloc+0x84/0xc0
[ 16.856927] [<ffffffff803fa7cc>] driver_attach+0x1c/0x20
[ 16.856970] [<ffffffff803f9988>] bus_add_driver+0x1f8/0x270
[ 16.857015] [<ffffffff803fad50>] driver_register+0x70/0x160
[ 16.857060] [<ffffffff803c3d91>] acpi_bus_register_driver+0x3e/0x40
[ 16.857105] [<ffffffffa00a103c>] :video:acpi_video_init+0x3c/0x5e
[ 16.857150] [<ffffffff8026bdfa>] sys_init_module+0xaa/0x1e0
[ 16.857195] [<ffffffff8020c5fa>] system_call_after_swapgs+0x8a/0x8f
[ 16.857241]
[ 16.868977] ACPI: device:28 is registered as cooling_device2
[ 16.869206] input: Video Bus as /class/input/input7
[ 16.892090] ACPI: Video Device [VGA] (multi-head: yes rom: no post: no)
[ 17.547075] usbcore: registered new interface driver hiddev
Thanks!
** Affects: xserver-xorg-video-ati (Ubuntu)
Importance: Undecided
Status: New
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ati radeon driver freezes with second monitor attached
https://bugs.launchpad.net/bugs/257383
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