fglrx display goes blank, system still responsive

Sep 1 17:12:24 bulma kernel: [260110.941552] <6>[fglrx] ASIC hang happened
Sep 1 17:12:24 bulma kernel: [260110.941555] CPU: 10 PID: 12531 Comm: Xorg Tainted: P OE 3.16.0-46-generic #62~14.04.1-Ubuntu
Sep 1 17:12:24 bulma kernel: [260110.941556] Hardware name: Dell Inc. Precision Tower 5810/0K240Y, BIOS A06 01/19/2015
Sep 1 17:12:24 bulma kernel: [260110.941557] 0000000103df1894 ffff8810426a7be8 ffffffff817663d1 0000000000000000
Sep 1 17:12:24 bulma kernel: [260110.941559] ffff8810426a7bf8 ffffffffc0dcc94e 0000000103df1893 ffffffffc0ddc1fc
Sep 1 17:12:24 bulma kernel: [260110.941560] 0000000000000000 ffffffffc0e9c59e ffff8810426a7c68 ffffffffc0e9c509
Sep 1 17:12:24 bulma kernel: [260110.941561] Call Trace:
Sep 1 17:12:24 bulma kernel: [260110.941566] [<ffffffff817663d1>] dump_stack+0x45/0x56
Sep 1 17:12:24 bulma kernel: [260110.941609] [<ffffffffc0dcc94e>] KCL_DEBUG_OsDump+0xe/0x10 [fglrx]
Sep 1 17:12:24 bulma kernel: [260110.941630] [<ffffffffc0ddc1fc>] firegl_hardwareHangRecovery+0x1c/0x30 [fglrx]
Sep 1 17:12:24 bulma kernel: [260110.941675] [<ffffffffc0e9c59e>] ? _ZN4Asic9WaitUntil15ResetASICIfHungEv+0x1e/0x30 [fglrx]
Sep 1 17:12:24 bulma kernel: [260110.941717] [<ffffffffc0e9c509>] ? _ZN4Asic9WaitUntil15WaitForCompleteEv+0xb9/0x130 [fglrx]
Sep 1 17:12:24 bulma kernel: [260110.941758] [<ffffffffc0e98e15>] ? _ZN4Asic19PM4ElapsedTimeStampEj14_LARGE_INTEGER12_QS_CP_RING_+0xd5/0x160 [fglrx]
Sep 1 17:12:24 bulma kernel: [260110.941804] [<ffffffffc0eb73b2>] ? _ZNK6AsicCI19insertEventWriteEOPE12_QS_CP_RING_RPjjRmR14_LARGE_INTEGERj+0xb2/0x170 [fglrx]
Sep 1 17:12:24 bulma kernel: [260110.941846] [<ffffffffc0ea10d9>] ? _ZN15ExecutableUnits35flush_all_and_invalidate_HDP_cachesE12_QS_CP_RING_+0xc9/0xf0 [fglrx]
Sep 1 17:12:24 bulma kernel: [260110.941889] [<ffffffffc0ea0fbe>] ? _ZN15ExecutableUnits8ringIdleE12_QS_CP_RING_+0x5e/0xb0 [fglrx]
Sep 1 17:12:24 bulma kernel: [260110.941924] [<ffffffffc0e77b8d>] ? _Z17uQSPm4SynchronizemP18_QS_SYNC_PACKET_IN+0x4d/0x50 [fglrx]
Sep 1 17:12:24 bulma kernel: [260110.941961] [<ffffffffc0e72888>] ? _Z8uCWDDEQCmjjPvjS_+0x648/0x1240 [fglrx]
Sep 1 17:12:24 bulma kernel: [260110.941996] [<ffffffffc0e68aea>] ? CMMQS_uCWDDEQC+0xa/0x10 [fglrx]
Sep 1 17:12:24 bulma kernel: [260110.942022] [<ffffffffc0e09d1f>] ? firegl_cmmqs_CWDDE_32+0x36f/0x480 [fglrx]
Sep 1 17:12:24 bulma kernel: [260110.942049] [<ffffffffc0e085be>] ? firegl_cmmqs_CWDDE32+0x8e/0x140 [fglrx]
Sep 1 17:12:24 bulma kernel: [260110.942051] [<ffffffff810777a7>] ? capable+0x17/0x20
Sep 1 17:12:24 bulma kernel: [260110.942077] [<ffffffffc0e08530>] ? firegl_cmmqs_disabledriver+0x120/0x120 [fglrx]
Sep 1 17:12:24 bulma kernel: [260110.942100] [<ffffffffc0dd6718>] ? firegl_ioctl+0x1f8/0x260 [fglrx]
Sep 1 17:12:24 bulma kernel: [260110.942120] [<ffffffffc0dc41de>] ? ip_firegl_unlocked_ioctl+0xe/0x20 [fglrx]
Sep 1 17:12:24 bulma kernel: [260110.942122] [<ffffffff811e75e0>] ? do_vfs_ioctl+0x2e0/0x4c0
Sep 1 17:12:24 bulma kernel: [260110.942125] [<ffffffff8164b242>] ? __sys_recvmsg+0x42/0x80
Sep 1 17:12:24 bulma kernel: [260110.942126] [<ffffffff811e7841>] ? SyS_ioctl+0x81/0xa0
Sep 1 17:12:24 bulma kernel: [260110.942129] [<ffffffff8176ea8d>] ? system_call_fastpath+0x1a/0x1f
Sep 1 17:12:24 bulma kernel: [260110.942131] pubdev:0xffffffffc18d09a0, num of device:1 , name:fglrx, major 15, minor 20.
Sep 1 17:12:24 bulma kernel: [260110.942132] device 0 : 0xffff881065ca0000 .
Sep 1 17:12:24 bulma kernel: [260110.942133] Asic ID:0x6649, revision:0x15, MMIOReg:0xffffc90017600000.
Sep 1 17:12:24 bulma kernel: [260110.942134] FB phys addr: 0x33fe0000000, MC :0xf400000000, Total FB size :0x100000000.
Sep 1 17:12:24 bulma kernel: [260110.942135] gart table MC:0xf40f6b8000, Physical:0x33fef6b8000, size:0x547000.
Sep 1 17:12:24 bulma kernel: [260110.942136] mc_node :FB, total 1 zones
Sep 1 17:12:24 bulma kernel: [260110.942137] MC start:0xf400000000, Physical:0x33fe0000000, size:0xfd00000.
Sep 1 17:12:24 bulma kernel: [260110.942138] Mapped heap -- Offset:0x0, size:0xf6b4000, reference count:50, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942139] Mapped heap -- Offset:0x0, size:0x1000000, reference count:1, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942140] Mapped heap -- Offset:0xf6b4000, size:0x4000, reference count:1, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942141] Mapped heap -- Offset:0xf6b8000, size:0x548000, reference count:1, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942142] Mapped heap -- Offset:0xfc00000, size:0x100000, reference count:1, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942143] mc_node :INV_FB, total 1 zones
Sep 1 17:12:24 bulma kernel: [260110.942144] MC start:0xf40fd00000, Physical:0x33fefd00000, size:0xf0300000.
Sep 1 17:12:24 bulma kernel: [260110.942145] Mapped heap -- Offset:0x2f8000, size:0x8000, reference count:1, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942146] Mapped heap -- Offset:0xf02f3000, size:0xd000, reference count:1, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942146] mc_node :GART_USWC, total 4 zones
Sep 1 17:12:24 bulma kernel: [260110.942147] MC start:0xff80900000, Physical:0x0, size:0x78000000.
Sep 1 17:12:24 bulma kernel: [260110.942148] Mapped heap -- Offset:0x0, size:0x2000000, reference count:6, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942149] mc_node :GART_CACHEABLE, total 4 zones
Sep 1 17:12:24 bulma kernel: [260110.942150] MC start:0xff50400000, Physical:0x0, size:0x30500000.
Sep 1 17:12:24 bulma kernel: [260110.942151] Mapped heap -- Offset:0xfb00000, size:0x900000, reference count:1, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942152] Mapped heap -- Offset:0x10c00000, size:0x900000, reference count:2, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942152] Mapped heap -- Offset:0xf300000, size:0x800000, reference count:1, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942153] Mapped heap -- Offset:0xe900000, size:0xa00000, reference count:1, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942154] Mapped heap -- Offset:0xdf00000, size:0xa00000, reference count:1, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942155] Mapped heap -- Offset:0xd600000, size:0x900000, reference count:2, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942156] Mapped heap -- Offset:0xcc00000, size:0xa00000, reference count:2, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942157] Mapped heap -- Offset:0xc200000, size:0xa00000, reference count:2, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942158] Mapped heap -- Offset:0xb800000, size:0xa00000, reference count:3, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942159] Mapped heap -- Offset:0xa000000, size:0x900000, reference count:3, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942160] Mapped heap -- Offset:0xaf00000, size:0x900000, reference count:2, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942161] Mapped heap -- Offset:0x9600000, size:0xa00000, reference count:5, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942162] Mapped heap -- Offset:0x8c00000, size:0xa00000, reference count:1, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942163] Mapped heap -- Offset:0x7a00000, size:0x1200000, reference count:7, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942164] Mapped heap -- Offset:0x6800000, size:0x1200000, reference count:2, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942165] Mapped heap -- Offset:0x5600000, size:0x1200000, reference count:3, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942166] Mapped heap -- Offset:0x4c00000, size:0xa00000, reference count:9, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942166] Mapped heap -- Offset:0x4200000, size:0xa00000, reference count:2, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942167] Mapped heap -- Offset:0x3000000, size:0x1200000, reference count:2, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942168] Mapped heap -- Offset:0x2600000, size:0xa00000, reference count:26, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942169] Mapped heap -- Offset:0x1400000, size:0x1200000, reference count:3, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942170] Mapped heap -- Offset:0x200000, size:0x1200000, reference count:4, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942171] Mapped heap -- Offset:0x0, size:0x200000, reference count:10, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942172] Mapped heap -- Offset:0xef000, size:0x11000, reference count:1, mapping count:0,
Sep 1 17:12:24 bulma kernel: [260110.942173] mc_node :PEER_FB_GART, total 1 zones
Sep 1 17:12:24 bulma kernel: [260110.942173] MC start:0xfff8900000, Physical:0x0, size:0x1000.
Sep 1 17:12:24 bulma kernel: [260110.942175] GRBM : 0xa00030a8, SRBM : 0x20000f40 .
Sep 1 17:12:24 bulma kernel: [260110.942177] CP_RB_BASE : 0xff809000, CP_RB_RPTR : 0x3bd78 , CP_RB_WPTR :0x3bdf0.
Sep 1 17:12:24 bulma kernel: [260110.942179] CP_IB1_BUFSZ:0x0, CP_IB1_BASE_HI:0xff, CP_IB1_BASE_LO:0x81436000.
Sep 1 17:12:24 bulma kernel: [260110.942180] last submit IB buffer -- MC :0xff81436000,phys:0x1056b31000.
Sep 1 17:12:24 bulma kernel: [260110.942181] Dump the trace queue.
Sep 1 17:12:24 bulma kernel: [260110.942182] End of dump

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: fglrx 2:15.200-0ubuntu0.5
ProcVersionSignature: Ubuntu 3.16.0-46.62~14.04.1-generic 3.16.7-ckt15
Uname: Linux 3.16.0-46-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.14.1-0ubuntu3.12
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
Date: Tue Sep 1 17:38:44 2015
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
DkmsStatus: fglrx-core, 15.200, 3.16.0-46-generic, x86_64: installed
DpkgLog:

GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Bonaire [1002:6649] (prog-if 00 [VGA controller])
   Subsystem: Dell Device [1028:230c]
InstallationDate: Installed on 2015-04-04 (149 days ago)
InstallationMedia: Xubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
LightdmGreeterLog:
 ** (lightdm-gtk-greeter:12549): WARNING **: Indicator "power": failed to load

 ** (lightdm-gtk-greeter:12549): WARNING **: Failed to load user image: Failed to open file '/home/jms/.face': No such file or directory
 init: indicator-application main process (12584) killed by TERM signal
LightdmGreeterLogOld:
 ** (lightdm-gtk-greeter:11448): WARNING **: Indicator "power": failed to load

 ** (lightdm-gtk-greeter:11448): WARNING **: Failed to load user image: Failed to open file '/home/jms/.face': No such file or directory
 init: indicator-application main process (11483) killed by TERM signal
MachineType: Dell Inc. Precision Tower 5810
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-3.16.0-46-generic.efi.signed root=UUID=a1429ef6-c504-47a9-82fc-f4c80b480f55 ro rootflags=subvol=@ console=tty0 console=ttyS0,9600n8
SourcePackage: fglrx-installer
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/19/2015
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A06
dmi.board.name: 0K240Y
dmi.board.vendor: Dell Inc.
dmi.board.version: A01
dmi.chassis.type: 7
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA06:bd01/19/2015:svnDellInc.:pnPrecisionTower5810:pvr01:rvnDellInc.:rn0K240Y:rvrA01:cvnDellInc.:ct7:cvr:
dmi.product.name: Precision Tower 5810
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.
version.compiz: compiz N/A
version.fglrx-installer: fglrx-installer N/A
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.60-2~ubuntu14.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri N/A
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core N/A
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A
xserver.bootTime: Mon Aug 31 21:08:05 2015
xserver.configfile: /etc/X11/xorg.conf
xserver.devices:
 input Power Button KEYBOARD, id 6
 input Power Button KEYBOARD, id 7
 input DELL DELL USB Laser Mouse MOUSE, id 8
 input AT Translated Set 2 keyboard KEYBOARD, id 9
 input DELL DELL USB Laser Mouse MOUSE, id 8
xserver.errors:
 AIGLX error: failed to open /usr/X11R6/lib64/modules/dri/fglrx_dri.so, error[/usr/X11R6/lib64/modules/dri/fglrx_dri.so: cannot open shared object file: No such file or directory]
 AIGLX error: failed to open /usr/lib64/dri/fglrx_dri.so, error[/usr/lib64/dri/fglrx_dri.so: cannot open shared object file: No such file or directory]
 AIGLX error: failed to open /usr/X11R6/lib/modules/dri/fglrx_dri.so, error[/usr/X11R6/lib/modules/dri/fglrx_dri.so: cannot open shared object file: No such file or directory]
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.16.0-1ubuntu1.2~trusty2
xserver.video_driver: fglrx