Created attachment 35832 [details]
My kernel config

Hi,

The screen on my laptop randomly turns blank. It happened a few times while using VLC. I'm not able to switch to tty and I have to reboot the machine. The error message is:

[22971.022943] [drm:i915_gem_object_bind_to_gtt] *ERROR* Attempting to bind a purgeable object
[22972.733431] [drm:intel_panel_get_max_backlight] *ERROR* fixme: max PWM is zero.
[22973.900121] chrome[28659]: segfault at 20a24948d72 ip 0000000001ddf097 sp 00007f63758af960 error 4 in chrome[400000+2201000]

Note that chrome segfaults just after the drm error.

I'm constantly upgrading my kernel from the git tree and the problem happened in the last 2-3 days, so it seems that the regression is newly introduced. Bug 21442 may be related, although it appeared a few days earlier and can be avoided by enabling CONFIG_DRM_I915_KMS.

The system is a Toshiba Satellite laptop and I pass "ro root=803
resume=/dev/sda3 resume_offset=3215360" to the kernel.

00:00.0 Host bridge: Intel Corporation Mobile PM965/GM965/GL960 Memory
Controller Hub (rev 0c)
00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960
Integrated Graphics Controller (rev 0c)
00:02.1 Display controller: Intel Corporation Mobile GM965/GL960 Integrated
Graphics Controller (rev 0c)
00:1a.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI
Controller #4 (rev 03)
00:1a.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI
Controller #5 (rev 03)
00:1a.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI
Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio
Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1
(rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 2
(rev 03)
00:1c.2 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 3
(rev 03)
00:1c.3 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 4
(rev 03)
00:1c.4 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 5
(rev 03)
00:1d.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI
Controller #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI
Controller #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI
Controller #3 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI
Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f3)
00:1f.0 ISA bridge: Intel Corporation 82801HEM (ICH8M) LPC Interface Controller
(rev 03)
00:1f.1 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) IDE
Controller (rev 03)
00:1f.2 SATA controller: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) SATA
AHCI Controller (rev 03)
00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller (rev 03)
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E
PCI Express Fast Ethernet controller (rev 01)
05:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan]
Network Connection (rev 02)
0c:04.0 CardBus bridge: Texas Instruments PCIxx12 Cardbus Controller
0c:04.1 FireWire (IEEE 1394): Texas Instruments PCIxx12 OHCI Compliant IEEE
1394 Host Controller
0c:04.2 Mass storage controller: Texas Instruments 5-in-1 Multimedia Card
Reader (SD/MMC/MS/MS PRO/xD)
0c:04.3 SD Host controller: Texas Instruments PCIxx12 SDA Standard Compliant SD
Host Controller