Bug 999684

Description of problem:
With an Nvidia video card in a Toshiba laptop running kernel 3.11.0-0.rc5.git6.1.fc20.x86_64 with the boot params of acpi_backlight=vendor acpi_osi=Linux I am unable to, in any way, adjust the backlight of my laptop.  Manually changing /sys/class/backlight/toshiba/brightness has no effect.  I have the following messages in dmesg relating to ACPI with this card:

[   15.084980] toshiba_acpi: Toshiba Laptop ACPI Extras version 0.19
[   15.085429] ACPI Warning: 0x0000000000000428-0x000000000000042f SystemIO conflicts with Region \PMIO 1 (20130517/utaddress-251)
[   15.085453] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver
[   15.085472] ACPI Warning: 0x00000000000011c0-0x00000000000011cf SystemIO conflicts with Region \GPIO 1 (20130517/utaddress-251)
[   15.085492] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver
[   15.085509] ACPI Warning: 0x00000000000011b0-0x00000000000011bf SystemIO conflicts with Region \GPIO 1 (20130517/utaddress-251)
[   15.085528] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver
[   15.085544] ACPI Warning: 0x0000000000001180-0x00000000000011af SystemIO conflicts with Region \GPIO 1 (20130517/utaddress-251)
[   15.085564] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver
[   15.387333] ACPI Warning: 0x0000000000001840-0x000000000000185f SystemIO conflicts with Region \_SB_.PCI0.SBUS.SMBI 1 (20130517/utaddress-251)
[   15.387383] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver

I believe this to be a kernel bug, not necessarily an acpi bug (as I saw this type of bug posted under acpi and it was closed as being posted to the wrong component).

I'm not running Gnome or KDE but lxde.

Version-Release number of selected component (if applicable):
3.11.0-0.rc5.git6.1.fc20.x86_64

How reproducible:
always for a while now.

Steps to Reproduce:
1. boot
2. can't adjust backlight.
3.

Actual results:
can't adjust monitor brightness

Expected results:
can adjust monitor brightness.

Additional info:

lspci:

00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 02)
00:01.0 PCI bridge: Intel Corporation Core Processor PCI Express x16 Root Port (rev 02)
00:1a.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05)
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 05)
00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 05)
00:1c.3 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 4 (rev 05)
00:1c.4 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 5 (rev 05)
00:1c.6 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 7 (rev 05)
00:1d.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a5)
00:1f.0 ISA bridge: Intel Corporation Mobile 5 Series Chipset LPC Interface Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 6 port SATA AHCI Controller (rev 05)
00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 05)
00:1f.6 Signal processing controller: Intel Corporation 5 Series/3400 Series Chipset Thermal Subsystem (rev 05)
01:00.0 VGA compatible controller: NVIDIA Corporation GT215M [GeForce GTS 360M] (rev a2)
01:00.1 Audio device: NVIDIA Corporation High Definition Audio Controller (rev a1)
02:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04)
07:00.0 FireWire (IEEE 1394): O2 Micro, Inc. 1394 OHCI Compliant Host Controller (rev 01)
07:00.1 SD Host controller: O2 Micro, Inc. Integrated MMC/SD Controller (rev 01)
07:00.2 Mass storage controller: O2 Micro, Inc. Integrated MS/MSPRO/xD Controller (rev 01)
0a:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8191SEvB Wireless LAN Controller (rev 10)
0b:00.0 Ethernet controller: Qualcomm Atheros AR8131 Gigabit Ethernet (rev c0)
ff:00.0 Host bridge: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers (rev 05)
ff:00.1 Host bridge: Intel Corporation Core Processor QuickPath Architecture System Address Decoder (rev 05)
ff:02.0 Host bridge: Intel Corporation Core Processor QPI Link 0 (rev 05)
ff:02.1 Host bridge: Intel Corporation Core Processor QPI Physical 0 (rev 05)
ff:02.2 Host bridge: Intel Corporation Core Processor Reserved (rev 05)
ff:02.3 Host bridge: Intel Corporation Core Processor Reserved (rev 05)