Comment 0 for bug 1088220

I have fglrx drivers in my hybrid fglrx/intel system and I am using the the integrated GPU, setup by:
amdconfig --px-igpu

The problem is that every second boot the X server crashes, which means:
- One time the X server loads normally **
- One time the X server crashes, giving the error in the attached log and the only thing I can do is reboot the system
This periodic behaviour is totally reproducible: once it crashes, after the reboot it works fine, on the next reboot crashes again, and so on...

** I had to use the patched fglrx/intel drivers from:
https://launchpad.net/~andrikos/+archive/ppa
in order to avoid Bug #1068404

[ 34.540409] BUG: unable to handle kernel paging request at ffffc90015b48700
[ 34.540447] IP: [<ffffffffa01964d7>] _ZN8AsicR6007getRptrE12_QS_CP_RING_+0x7/0x10 [fglrx]
[ 34.540547] PGD 12b020067 PUD 12b021067 PMD 10ceed067 PTE 0
[ 34.540574] Oops: 0000 [#1] SMP
[ 34.540591] CPU 0
[ 34.540599] Modules linked in: pci_stub vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) parport_pc rfcomm ppdev bnep binfmt_misc snd_hda_codec_hdmi snd_hda_codec_realtek coretemp kvm_intel kvm ghash_clmulni
_intel cryptd btusb bluetooth uvcvideo videobuf2_core videodev videobuf2_vmalloc videobuf2_memops joydev microcode snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi arc4 snd_rawmidi snd_seq_midi_event s
nd_seq snd_timer snd_seq_device psmouse serio_raw mac_hid
sony_laptop snd ath9k mei i915 drm_kms_helper fglrx(PO) drm soundcore snd_page_alloc i2c_algo_bit video mac80211 ath9k_common lpc_ich ath9k_hw ath cfg80211 amd_iommu_v2 lp parport hid_generic usbhid hid mmc_bloc
k atl1c sdhci_pci sdhci
[ 34.540911]
[ 34.540915] Pid: 1204, comm: Xorg Tainted: P O 3.5.0-20-generic #31-Ubuntu Sony Corporation VPCCB2S1E/VAIO
[ 34.540956] RIP: 0010:[<ffffffffa01964d7>] [<ffffffffa01964d7>] _ZN8AsicR6007getRptrE12_QS_CP_RING_+0x7/0x10 [fglrx]
[ 34.541045] RSP: 0018:ffff8801079c9cf0 EFLAGS: 00010246
[ 34.541065] RAX: 0000000000000001 RBX: ffffffffa02a8830 RCX: 0000000000000007
[ 34.541090] RDX: ffffc90015b40000 RSI: 0000000000000000 RDI: ffffc9001674b020
[ 34.541115] RBP: ffffc90016b6f140 R08: 0000000000000004 R09: ffffc9001674b020
[ 34.541141] R10: 0000000000000000 R11: ffff88010c880500 R12: ffffc9001674b198
[ 34.541166] R13: ffff88010db80000 R14: ffff88010db80000 R15: 0000000000000000
[ 34.541193] FS: 00007f19d9cbd880(0000) GS:ffff88012fa00000(0000) knlGS:0000000000000000
[ 34.541222] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 34.541243] CR2: ffffc90015b48700 CR3: 00000001079c4000 CR4: 00000000000407f0
[ 34.541268] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 34.541295] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 34.541320] Process Xorg (pid: 1204, threadinfo ffff8801079c8000, task ffff880108039700)
[ 34.541349] Stack:
[ 34.541357] ffffffffa0179535 ffff8801079c9d48 ffffc9001674b020 0000000000000000
[ 34.542796] ffffffffa0197ba9 ffff88010db80000 0000000000000000 ffff880107a6d120
[ 34.544219] ffffffffa014aff4 ffff880107a6d120 ffffffffa0103dfa ffff8801079c9d58
[ 34.545661] Call Trace:
[ 34.547115] [<ffffffffa0179535>] ? _ZN15ExecutableUnits17assertPrimaryRingEb+0x1e5/0x220 [fglrx]
[ 34.548603] [<ffffffffa0197ba9>] ? _ZN8AsicR6009assertPM4Eb+0x39/0x80 [fglrx]
[ 34.550077] [<ffffffffa014aff4>] ? CMMQS_DisableQS+0x24/0x30 [fglrx]
[ 34.551541] [<ffffffffa0103dfa>] ? firegl_cmmqs_Disable_QS+0x3a/0xe0 [fglrx]
[ 34.553004] [<ffffffffa00cea9e>] ? KCL_PCI_ReadConfigWord+0x1e/0x20 [fglrx]
[ 34.554458] [<ffffffffa00d8c64>] ? firegl_takedown+0x854/0x8f0 [fglrx]
[ 34.555927] [<ffffffffa0106c08>] ? firegl_acpi_eval_method+0x348/0x500 [fglrx]
[ 34.557371] [<ffffffff812b31d8>] ? security_capable+0x18/0x20
[ 34.558838] [<ffffffffa01068c0>] ? firegl_acpi_eval_method_helper+0x100/0x100 [fglrx]
[ 34.560308] [<ffffffffa00d7b6d>] ? firegl_ioctl+0x1ed/0x250 [fglrx]
[ 34.561769] [<ffffffffa00c7ace>] ? ip_firegl_unlocked_ioctl+0xe/0x20 [fglrx]
[ 34.563214] [<ffffffff81193bd9>] ? do_vfs_ioctl+0x99/0x590
[ 34.564652] [<ffffffff811a0544>] ? mntput+0x24/0x40
[ 34.566088] [<ffffffff81183422>] ? fput+0x1a2/0x260
[ 34.567513] [<ffffffff81194169>] ? sys_ioctl+0x99/0xa0
[ 34.568980] [<ffffffff8168b969>] ? system_call_fastpath+0x16/0x1b
[ 34.570402] Code: 8b 4c 24 10 41 89 4a 08 41 8b 38 49 8b 33 89 7e 0c 41 8b 50 04 49 8b 1b 89 53 10 49 83 03 14 eb 8a 90 66 90 48 8b 97 00 01 00 00 <8b> 82 00 87 00 00 c3 66 90 53 48 89 fb e8 97 6a fc ff 48 8b
 bb
[ 34.571991] RIP [<ffffffffa01964d7>] _ZN8AsicR6007getRptrE12_QS_CP_RING_+0x7/0x10 [fglrx]
[ 34.573588] RSP <ffff8801079c9cf0>
[ 34.575105] CR2: ffffc90015b48700
[ 34.596474] ---[ end trace aeeb911c328d3cdb ]---
[ 34.597160] [fglrx:firegl_release] *ERROR* device busy: 1 0
[ 34.597162] [fglrx] release failed with code -EBUSY
[ 34.687351] init: lightdm main process (1193) terminated with status 1