Package: linux-2.6 Severity: normal --- Please enter the report below this line. ---
Presing the "light up" / "light down" keys doesn't modify the LCD screen brightness. Directly writing to /sys/class/backlight/panasonic/brightness has the same effect : nothing. /sys/class/backlight/panasonic/actual_brightness is modified, but the screen brightness isn't affected. I tried to reboot with lenny 2.6.26-2 kernel on the same system, and the brightness could be changed by pressing the up/down keys, so I believe it is a kernel issue (but gdm couldn't properly start, so it is not a proper workaround). It is a serious issue, since the screen default brightness is very strong and uncomfortable. I believe it is related to https://bugs.launchpad.net/ubuntu/+source/linux/+bug/588983 I tried to use acpi packages from unstable, without improvement. --- System information. --- Architecture: amd64 Kernel: Linux 2.6.32-5-amd64 Debian Release: squeeze/sid 700 testing security.debian.org 700 testing ftp.jaist.ac.jp 600 unstable ftp.jaist.ac.jp 500 stable ftp.jaist.ac.jp
00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 02) Subsystem: Matsushita Electric Industrial Co., Ltd. Device 8338 Flags: bus master, fast devsel, latency 0 Capabilities: [e0] Vendor Specific Information: Len=0c <?> Kernel driver in use: agpgart-intel 00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 02) (prog-if 00 [VGA controller]) Subsystem: Matsushita Electric Industrial Co., Ltd. Device 8338 Flags: bus master, fast devsel, latency 0, IRQ 35 Memory at f0000000 (64-bit, non-prefetchable) [size=4M] Memory at e0000000 (64-bit, prefetchable) [size=256M] I/O ports at e0b0 [size=8] Expansion ROM at <unassigned> [disabled] Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [d0] Power Management version 2 Capabilities: [a4] PCI Advanced Features Kernel driver in use: i915 00:19.0 Ethernet controller: Intel Corporation 82577LM Gigabit Network Connection (rev 06) Subsystem: Matsushita Electric Industrial Co., Ltd. Device 8338 Flags: bus master, fast devsel, latency 0, IRQ 33 Memory at f4a00000 (32-bit, non-prefetchable) [size=128K] Memory at f4a29000 (32-bit, non-prefetchable) [size=4K] I/O ports at e040 [size=32] Capabilities: [c8] Power Management version 2 Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [e0] PCI Advanced Features Kernel driver in use: e1000e 00:1a.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 06) (prog-if 20 [EHCI]) Subsystem: Matsushita Electric Industrial Co., Ltd. Device 8338 Flags: bus master, medium devsel, latency 0, IRQ 16 Memory at f4a28000 (32-bit, non-prefetchable) [size=1K] Capabilities: [50] Power Management version 2 Capabilities: [58] Debug port: BAR=1 offset=00a0 Capabilities: [98] PCI Advanced Features Kernel driver in use: ehci_hcd 00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 06) Subsystem: Matsushita Electric Industrial Co., Ltd. Device 8338 Flags: bus master, fast devsel, latency 0, IRQ 22 Memory at f4a20000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 2 Capabilities: [60] MSI: Enable- Count=1/1 Maskable- 64bit+ Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00 Capabilities: [100] Virtual Channel Capabilities: [130] Root Complex Link Kernel driver in use: HDA Intel 00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 06) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 I/O behind bridge: 0000d000-0000dfff Memory behind bridge: f4800000-f49fffff Capabilities: [40] Express Root Port (Slot+), MSI 00 Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [90] Subsystem: Matsushita Electric Industrial Co., Ltd. Device 8338 Capabilities: [a0] Power Management version 2 Kernel driver in use: pcieport 00:1c.1 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 2 (rev 06) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=02, subordinate=09, sec-latency=0 I/O behind bridge: 0000c000-0000cfff Memory behind bridge: f4600000-f47fffff Prefetchable memory behind bridge: 00000000f4b00000-00000000f4cfffff Capabilities: [40] Express Root Port (Slot+), MSI 00 Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [90] Subsystem: Matsushita Electric Industrial Co., Ltd. Device 8338 Capabilities: [a0] Power Management version 2 Kernel driver in use: pcieport 00:1c.2 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 3 (rev 06) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=0a, subordinate=0a, sec-latency=0 I/O behind bridge: 0000b000-0000bfff Memory behind bridge: f4400000-f45fffff Capabilities: [40] Express Root Port (Slot+), MSI 00 Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [90] Subsystem: Matsushita Electric Industrial Co., Ltd. Device 8338 Capabilities: [a0] Power Management version 2 Kernel driver in use: pcieport 00:1c.3 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 4 (rev 06) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=0b, subordinate=13, sec-latency=0 I/O behind bridge: 00009000-0000afff Memory behind bridge: f0400000-f43fffff Capabilities: [40] Express Root Port (Slot+), MSI 00 Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [90] Subsystem: Matsushita Electric Industrial Co., Ltd. Device 8338 Capabilities: [a0] Power Management version 2 Kernel driver in use: pcieport 00:1d.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 06) (prog-if 20 [EHCI]) Subsystem: Matsushita Electric Industrial Co., Ltd. Device 8338 Flags: bus master, medium devsel, latency 0, IRQ 23 Memory at f4a27000 (32-bit, non-prefetchable) [size=1K] Capabilities: [50] Power Management version 2 Capabilities: [58] Debug port: BAR=1 offset=00a0 Capabilities: [98] PCI Advanced Features Kernel driver in use: ehci_hcd 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a6) (prog-if 01 [Subtractive decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=14, subordinate=14, sec-latency=32 Capabilities: [50] Subsystem: Matsushita Electric Industrial Co., Ltd. Device 8338 00:1f.0 ISA bridge: Intel Corporation Mobile 5 Series Chipset LPC Interface Controller (rev 06) Subsystem: Matsushita Electric Industrial Co., Ltd. Device 8338 Flags: bus master, medium devsel, latency 0 Capabilities: [e0] Vendor Specific Information: Len=10 <?> 00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 6 port SATA AHCI Controller (rev 06) (prog-if 01 [AHCI 1.0]) Subsystem: Matsushita Electric Industrial Co., Ltd. Device 8338 Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 34 I/O ports at e090 [size=8] I/O ports at e080 [size=4] I/O ports at e070 [size=8] I/O ports at e060 [size=4] I/O ports at e020 [size=32] Memory at f4a26000 (32-bit, non-prefetchable) [size=2K] Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [70] Power Management version 3 Capabilities: [a8] SATA HBA v1.0 Capabilities: [b0] PCI Advanced Features Kernel driver in use: ahci 00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 06) Subsystem: Matsushita Electric Industrial Co., Ltd. Device 8338 Flags: medium devsel, IRQ 18 Memory at f4a25000 (64-bit, non-prefetchable) [size=256] I/O ports at e000 [size=32] 00:1f.6 Signal processing controller: Intel Corporation 5 Series/3400 Series Chipset Thermal Subsystem (rev 06) Subsystem: Matsushita Electric Industrial Co., Ltd. Device 8338 Flags: bus master, fast devsel, latency 0, IRQ 11 Memory at f4a24000 (64-bit, non-prefetchable) [size=4K] Capabilities: [50] Power Management version 3 Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit- 0a:00.0 Network controller: Intel Corporation Centrino Advanced-N + WiMAX 6250 (rev 35) Subsystem: Intel Corporation Centrino Advanced-N + WiMAX 6250 2x2 AGN Flags: bus master, fast devsel, latency 0, IRQ 36 Memory at f4400000 (64-bit, non-prefetchable) [size=8K] Capabilities: [c8] Power Management version 3 Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [e0] Express Endpoint, MSI 00 Capabilities: [100] Advanced Error Reporting Capabilities: [140] Device Serial Number 00-23-15-ff-ff-0e-77-d4 Kernel driver in use: iwlagn 0b:00.0 CardBus bridge: Ricoh Co Ltd Device e476 Subsystem: Matsushita Electric Industrial Co., Ltd. Device 8338 Flags: bus master, fast devsel, latency 0, IRQ 19 Memory at f2c01000 (32-bit, non-prefetchable) [size=4K] Bus: primary=0b, secondary=0c, subordinate=0f, sec-latency=176 Memory window 0: f0400000-f2bff000 (prefetchable) Memory window 1: f3000000-f33ff000 I/O window 0: 00009000-000090ff I/O window 1: 00009400-000094ff 16-bit legacy interface ports at 0001 Kernel driver in use: yenta_cardbus 0b:00.1 SD Host controller: Ricoh Co Ltd Device e822 (rev 02) (prog-if 01) Subsystem: Matsushita Electric Industrial Co., Ltd. Device 8338 Flags: bus master, fast devsel, latency 0, IRQ 16 Memory at f2c00000 (32-bit, non-prefetchable) [size=256] Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit+ Capabilities: [78] Power Management version 3 Capabilities: [80] Express Endpoint, MSI 00 Kernel driver in use: sdhci-pci 3f:00.0 Host bridge: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers (rev 02) Subsystem: Intel Corporation Device 8086 Flags: bus master, fast devsel, latency 0 3f:00.1 Host bridge: Intel Corporation Core Processor QuickPath Architecture System Address Decoder (rev 02) Subsystem: Intel Corporation Device 8086 Flags: bus master, fast devsel, latency 0 3f:02.0 Host bridge: Intel Corporation Core Processor QPI Link 0 (rev 02) Subsystem: Intel Corporation Device 8086 Flags: bus master, fast devsel, latency 0 3f:02.1 Host bridge: Intel Corporation Core Processor QPI Physical 0 (rev 02) Subsystem: Intel Corporation Device 8086 Flags: bus master, fast devsel, latency 0 3f:02.2 Host bridge: Intel Corporation Core Processor Reserved (rev 02) Subsystem: Intel Corporation Device 8086 Flags: bus master, fast devsel, latency 0 3f:02.3 Host bridge: Intel Corporation Core Processor Reserved (rev 02) Subsystem: Intel Corporation Device 8086 Flags: bus master, fast devsel, latency 0