Backlight control not working in kubuntu 12.04
Hi all.
I have a Toshiba A300-202 laptop. With older installations of kubuntu I hadd full control over the backlight. After a clean instalation of kubuntu 12.04.1 the backlight control stopped working.
The desktop responds to the brightness Fn-keys but there's no response from the display.
Here's the output of lshw
Unfortunately, display brightness is permanently set to the maximum, which is extremelly uncomfortable.Code:WARNING: you should run this program as super-user. tinta-roriz description: Computer width: 64 bits capabilities: vsyscall32 *-core description: Motherboard physical id: 0 *-memory description: System memory physical id: 0 size: 3953MiB *-cpu product: Intel(R) Core(TM)2 Duo CPU T9550 @ 2.66GHz vendor: Intel Corp. physical id: 1 bus info: cpu@0 size: 2667MHz capacity: 2667MHz width: 64 bits capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx x86-64 constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm ida dtherm tpr_shadow vnmi flexpriority cpufreq *-pci description: Host bridge product: Mobile 4 Series Chipset Memory Controller Hub vendor: Intel Corporation physical id: 100 bus info: pci@0000:00:00.0 version: 07 width: 32 bits clock: 33MHz *-pci:0 description: PCI bridge product: Mobile 4 Series Chipset PCI Express Graphics Port vendor: Intel Corporation physical id: 1 bus info: pci@0000:00:01.0 version: 07 width: 32 bits clock: 33MHz capabilities: pci normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:40 ioport:5000(size=4096) memory:d6300000-d63fffff ioport:c0000000(size=268435456) *-display description: VGA compatible controller product: RV635 [Mobility Radeon HD 3650] vendor: Hynix Semiconductor (Hyundai Electronics) physical id: 0 bus info: pci@0000:01:00.0 version: 00 width: 32 bits clock: 33MHz capabilities: vga_controller bus_master cap_list rom configuration: driver=radeon latency=0 resources: irq:46 memory:c0000000-cfffffff ioport:5000(size=256) memory:d6300000-d630ffff memory:d6320000-d633ffff *-multimedia description: Audio device product: RV635 HDMI Audio [Radeon HD 3600 Series] vendor: Hynix Semiconductor (Hyundai Electronics) physical id: 0.1 bus info: pci@0000:01:00.1 version: 00 width: 32 bits clock: 33MHz capabilities: bus_master cap_list configuration: driver=snd_hda_intel latency=0 resources: irq:49 memory:d6310000-d6313fff *-usb:0 description: USB controller product: 82801I (ICH9 Family) USB UHCI Controller #4 vendor: Intel Corporation physical id: 1a bus info: pci@0000:00:1a.0 version: 03 width: 32 bits clock: 33MHz capabilities: uhci bus_master cap_list configuration: driver=uhci_hcd latency=0 resources: irq:16 ioport:60e0(size=32) *-usb:1 description: USB controller product: 82801I (ICH9 Family) USB UHCI Controller #5 vendor: Intel Corporation physical id: 1a.1 bus info: pci@0000:00:1a.1 version: 03 width: 32 bits clock: 33MHz capabilities: uhci bus_master cap_list configuration: driver=uhci_hcd latency=0 resources: irq:21 ioport:60c0(size=32) *-usb:2 description: USB controller product: 82801I (ICH9 Family) USB2 EHCI Controller #2 vendor: Intel Corporation physical id: 1a.7 bus info: pci@0000:00:1a.7 version: 03 width: 32 bits clock: 33MHz capabilities: ehci bus_master cap_list configuration: driver=ehci_hcd latency=0 resources: irq:19 memory:d6405c00-d6405fff *-multimedia description: Audio device product: 82801I (ICH9 Family) HD Audio Controller vendor: Intel Corporation physical id: 1b bus info: pci@0000:00:1b.0 version: 03 width: 64 bits clock: 33MHz capabilities: bus_master cap_list configuration: driver=snd_hda_intel latency=0 resources: irq:48 memory:d6400000-d6403fff *-pci:1 description: PCI bridge product: 82801I (ICH9 Family) PCI Express Port 1 vendor: Intel Corporation physical id: 1c bus info: pci@0000:00:1c.0 version: 03 width: 32 bits clock: 33MHz capabilities: pci normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:41 ioport:3000(size=8192) memory:d5300000-d62fffff ioport:d0000000(size=17825792) *-network description: Ethernet interface product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:02:00.0 logical name: eth0 version: 02 serial: 00:1e:33:90:eb:df size: 100Mbit/s capacity: 100Mbit/s width: 64 bits clock: 33MHz capabilities: bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=N/A ip=10.112.40.121 latency=0 multicast=yes port=MII speed=100Mbit/s resources: irq:45 ioport:3000(size=256) memory:d0010000-d0010fff memory:d0000000-d000ffff *-pci:2 description: PCI bridge product: 82801I (ICH9 Family) PCI Express Port 2 vendor: Intel Corporation physical id: 1c.1 bus info: pci@0000:00:1c.1 version: 03 width: 32 bits clock: 33MHz capabilities: pci normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:42 ioport:2000(size=4096) memory:d4200000-d52fffff ioport:d1100000(size=16777216) *-network description: Wireless interface product: WiFi Link 5100 vendor: Intel Corporation physical id: 0 bus info: pci@0000:03:00.0 logical name: wlan0 version: 00 serial: 00:22:fa:18:fb:24 width: 64 bits clock: 33MHz capabilities: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.2.0-38-generic firmware=8.83.5.1 build 33692 ip=172.22.1.154 latency=0 multicast=yes wireless=IEEE 802.11abgn resources: irq:47 memory:d4200000-d4201fff *-pci:3 description: PCI bridge product: 82801I (ICH9 Family) PCI Express Port 5 vendor: Intel Corporation physical id: 1c.4 bus info: pci@0000:00:1c.4 version: 03 width: 32 bits clock: 33MHz capabilities: pci normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:43 ioport:1000(size=4096) memory:d3200000-d41fffff ioport:d2100000(size=16777216) *-usb:3 description: USB controller product: 82801I (ICH9 Family) USB UHCI Controller #1 vendor: Intel Corporation physical id: 1d bus info: pci@0000:00:1d.0 version: 03 width: 32 bits clock: 33MHz capabilities: uhci bus_master cap_list configuration: driver=uhci_hcd latency=0 resources: irq:23 ioport:60a0(size=32) *-usb:4 description: USB controller product: 82801I (ICH9 Family) USB UHCI Controller #2 vendor: Intel Corporation physical id: 1d.1 bus info: pci@0000:00:1d.1 version: 03 width: 32 bits clock: 33MHz capabilities: uhci bus_master cap_list configuration: driver=uhci_hcd latency=0 resources: irq:19 ioport:6080(size=32) *-usb:5 description: USB controller product: 82801I (ICH9 Family) USB UHCI Controller #3 vendor: Intel Corporation physical id: 1d.2 bus info: pci@0000:00:1d.2 version: 03 width: 32 bits clock: 33MHz capabilities: uhci bus_master cap_list configuration: driver=uhci_hcd latency=0 resources: irq:16 ioport:6060(size=32) *-usb:6 description: USB controller product: 82801I (ICH9 Family) USB UHCI Controller #6 vendor: Intel Corporation physical id: 1d.3 bus info: pci@0000:00:1d.3 version: 03 width: 32 bits clock: 33MHz capabilities: uhci bus_master cap_list configuration: driver=uhci_hcd latency=0 resources: irq:18 ioport:6040(size=32) *-usb:7 description: USB controller product: 82801I (ICH9 Family) USB2 EHCI Controller #1 vendor: Intel Corporation physical id: 1d.7 bus info: pci@0000:00:1d.7 version: 03 width: 32 bits clock: 33MHz capabilities: ehci bus_master cap_list configuration: driver=ehci_hcd latency=0 resources: irq:23 memory:d6405800-d6405bff *-pci:4 description: PCI bridge product: 82801 Mobile PCI Bridge vendor: Intel Corporation physical id: 1e bus info: pci@0000:00:1e.0 version: 93 width: 32 bits clock: 33MHz capabilities: pci subtractive_decode bus_master cap_list resources: memory:d3100000-d31fffff *-firewire description: FireWire (IEEE 1394) product: R5C832 IEEE 1394 Controller vendor: Ricoh Co Ltd physical id: 6 bus info: pci@0000:04:06.0 version: 05 width: 32 bits clock: 33MHz capabilities: ohci bus_master cap_list configuration: driver=firewire_ohci latency=64 maxlatency=4 mingnt=2 resources: irq:17 memory:d3100000-d31007ff *-generic:0 description: SD Host controller product: R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter vendor: Ricoh Co Ltd physical id: 6.1 bus info: pci@0000:04:06.1 version: 22 width: 32 bits clock: 33MHz capabilities: bus_master cap_list configuration: driver=sdhci-pci latency=32 resources: irq:17 memory:d3100b00-d3100bff *-generic:1 description: System peripheral product: R5C592 Memory Stick Bus Host Adapter vendor: Ricoh Co Ltd physical id: 6.2 bus info: pci@0000:04:06.2 version: 12 width: 32 bits clock: 33MHz capabilities: bus_master cap_list configuration: driver=r592 latency=64 resources: irq:17 memory:d3100900-d31009ff *-generic:2 description: System peripheral product: xD-Picture Card Controller vendor: Ricoh Co Ltd physical id: 6.3 bus info: pci@0000:04:06.3 version: 12 width: 32 bits clock: 33MHz capabilities: bus_master cap_list configuration: driver=r852 latency=64 resources: irq:17 memory:d3100800-d31008ff *-isa description: ISA bridge product: ICH9M LPC Interface Controller vendor: Intel Corporation physical id: 1f bus info: pci@0000:00:1f.0 version: 03 width: 32 bits clock: 33MHz capabilities: isa bus_master cap_list configuration: latency=0 *-storage description: SATA controller product: 82801IBM/IEM (ICH9M/ICH9M-E) 4 port SATA Controller [AHCI mode] vendor: Intel Corporation physical id: 1f.2 bus info: pci@0000:00:1f.2 version: 03 width: 32 bits clock: 66MHz capabilities: storage ahci_1.0 bus_master cap_list configuration: driver=ahci latency=0 resources: irq:44 ioport:6108(size=8) ioport:6114(size=4) ioport:6100(size=8) ioport:6110(size=4) ioport:6020(size=32) memory:d6405000-d64057ff *-serial UNCLAIMED description: SMBus product: 82801I (ICH9 Family) SMBus Controller vendor: Intel Corporation physical id: 1f.3 bus info: pci@0000:00:1f.3 version: 03 width: 64 bits clock: 33MHz configuration: latency=0 resources: memory:d6406000-d64060ff ioport:6000(size=32) WARNING: output may be incomplete or inaccurate, you should run this program as super-user.
Does anyone has a hint on how to fix this up?
Thanks!
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