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[afoglia <afoglia@xxxxxxxxx>]

Public bug reported:

Binary package hint: xserver-xorg-video-ati

I'm running natty, and every since the upgrade to 6.14.0 I've been
unable to consistently boot.  After some discussion in the forums, I
tried repeatedly to boot into recovery mode.  In most cases, I got a
black screen.  One time though, when I was able to successfully increase
the brightness, I saw some errors from the radeon module.  I took a
photo (available at http://i.imgur.com/P0bQ0.jpg), and here's the stack
and call trace, as best as I can read it:

Stack:
 ffff880149eb8000 ffff880149eb8000 0000000000000011 0000000000000911
 00000000fffffff4 ffff88014b6c7800 ffff88014b0f7b58 ffffffffa022aba0
 ffff8801460f7b58 ffff880149eb8000 0000000000000000 0000000000410028
Call Trace:
 [<ffffffffa022aba0>] evergreen_cp_resume+0x3a0/0x630 [radeon]
 [<ffffffffa022c8b7>] evergreen_startup+0x157/0x260 [radeon]
 [<ffffffffa01fe8a0>] ? r600_pcie_gart_init+0x60/0x70 [radeon]
 [<ffffffffa022dbec>] evergreen_init+0x1ac/0x2d0 [radeon]
 [<ffffffffa01a5a69>] radeon_device_init+0x409/0x490 [radeon]
 [<ffffffffa01a7142>] radeon_driver_load_kms+0xb2/0x1a0 [radeon]
 [<ffffffffa007fb2e>] drm_get_pci_dev+0x18e/0x300 [drm]
 [<ffffffff8115426f>] ? kmem_cache_alloc_trace+0xff/0x120
 [<ffffffffa023790e>] radeon_pci_probe+0xb2/0xba [radeon]
 [<ffffffff812fea7f>] local_pci_probe+0x5f/0xd0
 [<ffffffff81300369>] pci_device_probe+0x119/0x120
 [<ffffffff813b8eca>] ? driver_sysfs_add+0x7a/0xb0
 [<ffffffff813b8ff8>] really_probe+0x68/0x190
 [<ffffffff813b9305>] driver_probe_device+0x45/0x70
 [<ffffffff813b93db>] __driver_attach+0xab/0xb0
 [<ffffffff813b9330>] ? __driver_attach+0x0/0xb0
 [<ffffffff813b817e>] bus_for_each_dev+0x5e/0x90
 [<ffffffff813b8e4e>] driver_attach+0x1e/0x20
 [<ffffffff813b89b5>] bus_add_driver+0xc5/0x280
 [<ffffffffa0013000>] ? radeon_init+0x0/0x1000 [radeon]
 [<ffffffff813b9676>] driver_register+0x76/0x140
 [<ffffffffa0013000>] ? radeon_init+0x0/0x1000 [radeon]
 [<ffffffff812ff126>] __pci_register_driver+0x56/0xd0
 [<ffffffffa0080044>] drm_pci_init+0xe4/0xf0 [drm]
 [<ffffffff815bf36e>] ? mutex_lock+0x1e/0x50
 [<ffffffffa0013000>] ? radeon_init+0x0/0x1000 [radeon]
 [<ffffffffa0077688>] drm_init+0x58/0x70 [drm]
 [<ffffffffa00130c4>] radeon_init+0xc4/0x1000 [radeon]
 [<ffffffff81002195>] do_one_initcall+0x45/0x190
 [<ffffffff810a4573>] sys_init_module+0x103/0x260
 [<ffffffff8100c002>] system_call_fastpath+0x16/0x1b
Code: 00 45 8b 84 24 e4 0a 00 00 45 85 c0 0f 8e c7 09 00 00 41 8b 84 24 d4 0a 00 00 89 c2 83 c0 01 40 c1 e2 02 49 03 94 24 c8 0a 00 00 <c7> 02 00 44 05 c0 41 8b 94 24 e4 0a 00 00 41 23 84 24 f4 0a 00
RIP  [<ffffffffa0227ad7>] evergreen_cp_start+0x57/0xc80 [radeon]
 RSP <ffff88014b0f7af8>
CRZ: ffffc90411ce1ffc
---[ end trace 37702c56f2e23247 ]---
udevd-work[94]: '/sbin/modprobe -bv pci:v00001002d000068C1sv0000103Csd00001436bc03sc00i00' unexpected exit with status 0x0009

There is also some register info dumped at the top of the screen visible
in the photo, that I didn't bother to write, as I'd most certainly get
something wrong.

** Affects: xserver-xorg-video-ati (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/727620

Title:
  [Radeon HD 5650] Driver crash during recovery boot