Description of problem: The display brightness cannot be changed on a Samsung N150 plus netbook. The Gnome brightness control applet does not work ("Cannot get laptop panel brightness"), nor do the Fn keys. Version-Release number of selected component (if applicable): 2.11.0-5.fc13 How reproducible: see above Additional info: [root@localhost raphael]# lshw localhost.localdomain description: Notebook product: N150P/N210P/N220P vendor: SAMSUNG ELECTRONICS CO., LTD. version: Not Applicable serial: ZQN593KZ700252 width: 32 bits capabilities: smbios-2.5 dmi-2.5 smp-1.4 smp configuration: administrator_password=disabled boot=normal chassis=notebook cpus=1 frontpanel_password=unknown keyboard_password=unknown power-on_password=disabled uuid=E05B63BC-E11D-B211-8000-D109F68C0449 *-core description: Motherboard product: N150P/N210P/N220P vendor: SAMSUNG ELECTRONICS CO., LTD. physical id: 0 version: Not Applicable serial: 123490EN400015 *-firmware description: BIOS vendor: Phoenix Technologies Ltd. physical id: 0 version: 01KY.M008.20100430.RHU (04/30/2010) size: 103KiB capacity: 1984KiB capabilities: isa pci pnp upgrade shadowing escd cdboot bootselect socketedrom edd int5printscreen int9keyboard int14serial int17printer int10video usb smartbattery biosbootspecification *-cpu description: CPU product: Intel(R) Atom(TM) CPU N450 @ 1.66GHz vendor: Intel Corp. physical id: 4 bus info: cpu@0 version: 6.12.10 serial: 0001-06CA-0000-0000-0000-0000 slot: CPU 1 size: 1GHz capacity: 3300MHz width: 64 bits capabilities: boot fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx x86-64 constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm movbe lahf_lm cpufreq configuration: id=0 *-cache:0 description: L1 cache physical id: 5 slot: L1 Cache size: 16KiB capacity: 16KiB capabilities: asynchronous internal write-back *-cache:1 description: L2 cache physical id: 6 slot: L2 Cache size: 512KiB capacity: 512KiB capabilities: burst internal write-back *-logicalcpu:0 description: Logical CPU physical id: 0.1 width: 64 bits capabilities: logical *-logicalcpu:1 description: Logical CPU physical id: 0.2 width: 64 bits capabilities: logical *-memory description: System Memory physical id: e slot: System board or motherboard size: 1GiB *-bank description: SODIMM DDR2 Synchronous 667 MHz (1.5 ns) product: 012345678901234567890123456789012345 vendor: 48spaces physical id: 0 serial: 01234567 slot: J6G1 size: 1GiB width: 64 bits clock: 667MHz (1.5ns) *-pci description: Host bridge product: N10 Family DMI Bridge vendor: Intel Corporation physical id: 100 bus info: pci@0000:00:00.0 version: 00 width: 32 bits clock: 33MHz configuration: driver=agpgart-intel resources: irq:0 *-display:0 description: VGA compatible controller product: N10 Family Integrated Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 00 width: 32 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:29 memory:f0300000-f037ffff ioport:18d0(size=8) memory:d0000000-dfffffff memory:f0000000-f00fffff *-display:1 UNCLAIMED description: Display controller product: N10 Family Integrated Graphics Controller vendor: Intel Corporation physical id: 2.1 bus info: pci@0000:00:02.1 version: 00 width: 32 bits clock: 33MHz capabilities: pm bus_master cap_list configuration: latency=0 resources: memory:f0380000-f03fffff *-multimedia description: Audio device product: N10/ICH 7 Family High Definition Audio Controller vendor: Intel Corporation physical id: 1b bus info: pci@0000:00:1b.0 version: 02 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: driver=HDA Intel latency=0 resources: irq:31 memory:f0400000-f0403fff *-pci:0 description: PCI bridge product: N10/ICH 7 Family PCI Express Port 1 vendor: Intel Corporation physical id: 1c bus info: pci@0000:00:1c.0 version: 02 width: 32 bits clock: 33MHz capabilities: pci pciexpress msi pm normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:24 ioport:3000(size=4096) memory:f0100000-f01fffff ioport:40000000(size=2097152) *-network description: Wireless interface product: BCM4313 802.11b/g LP-PHY vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:05:00.0 logical name: eth1 version: 01 serial: e8:39:df:69:f7:29 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=wl0 driverversion=5.60.48.36 latency=0 multicast=yes wireless=IEEE 802.11 resources: irq:16 memory:f0100000-f0103fff *-pci:1 description: PCI bridge product: N10/ICH 7 Family PCI Express Port 2 vendor: Intel Corporation physical id: 1c.1 bus info: pci@0000:00:1c.1 version: 02 width: 32 bits clock: 33MHz capabilities: pci pciexpress msi pm normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:25 ioport:4000(size=4096) memory:40200000-403fffff ioport:40400000(size=2097152) *-pci:2 description: PCI bridge product: N10/ICH 7 Family PCI Express Port 3 vendor: Intel Corporation physical id: 1c.2 bus info: pci@0000:00:1c.2 version: 02 width: 32 bits clock: 33MHz capabilities: pci pciexpress msi pm normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:26 ioport:2000(size=4096) memory:f0200000-f02fffff ioport:40600000(size=2097152) *-network description: Ethernet interface product: 88E8040 PCI-E Fast Ethernet Controller vendor: Marvell Technology Group Ltd. physical id: 0 bus info: pci@0000:09:00.0 logical name: eth0 version: 00 serial: 00:24:54:b1:b9:cc size: 100MB/s capacity: 100MB/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=sky2 driverversion=1.27 duplex=full firmware=N/A ip=192.168.1.64 latency=0 link=yes multicast=yes port=twisted pair speed=100MB/s resources: irq:30 memory:f0200000-f0203fff ioport:2000(size=256) *-pci:3 description: PCI bridge product: N10/ICH 7 Family PCI Express Port 4 vendor: Intel Corporation physical id: 1c.3 bus info: pci@0000:00:1c.3 version: 02 width: 32 bits clock: 33MHz capabilities: pci pciexpress msi pm normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:27 ioport:5000(size=4096) memory:40800000-409fffff ioport:40a00000(size=2097152) *-usb:0 description: USB Controller product: N10/ICH7 Family USB UHCI Controller #1 vendor: Intel Corporation physical id: 1d bus info: pci@0000:00:1d.0 version: 02 width: 32 bits clock: 33MHz capabilities: uhci bus_master configuration: driver=uhci_hcd latency=0 resources: irq:23 ioport:1820(size=32) *-usbhost product: UHCI Host Controller vendor: Linux 2.6.34.7-56.fc13.i686 uhci_hcd physical id: 1 bus info: usb@2 logical name: usb2 version: 2.06 capabilities: usb-1.10 configuration: driver=hub slots=2 speed=12.0MB/s *-usb:1 description: USB Controller product: N10/ICH 7 Family USB UHCI Controller #2 vendor: Intel Corporation physical id: 1d.1 bus info: pci@0000:00:1d.1 version: 02 width: 32 bits clock: 33MHz capabilities: uhci bus_master configuration: driver=uhci_hcd latency=0 resources: irq:19 ioport:1840(size=32) *-usbhost product: UHCI Host Controller vendor: Linux 2.6.34.7-56.fc13.i686 uhci_hcd physical id: 1 bus info: usb@3 logical name: usb3 version: 2.06 capabilities: usb-1.10 configuration: driver=hub slots=2 speed=12.0MB/s *-usb description: Bluetooth wireless interface product: Broadcom BCM2070 Bluetooth Device vendor: Broadcom Corp physical id: 2 bus info: usb@3:2 version: 6.00 serial: E839DF04D3ED capabilities: bluetooth usb-2.00 configuration: driver=btusb speed=12.0MB/s *-usb:2 description: USB Controller product: N10/ICH 7 Family USB UHCI Controller #3 vendor: Intel Corporation physical id: 1d.2 bus info: pci@0000:00:1d.2 version: 02 width: 32 bits clock: 33MHz capabilities: uhci bus_master configuration: driver=uhci_hcd latency=0 resources: irq:18 ioport:1860(size=32) *-usbhost product: UHCI Host Controller vendor: Linux 2.6.34.7-56.fc13.i686 uhci_hcd physical id: 1 bus info: usb@4 logical name: usb4 version: 2.06 capabilities: usb-1.10 configuration: driver=hub slots=2 speed=12.0MB/s *-usb:3 description: USB Controller product: N10/ICH 7 Family USB UHCI Controller #4 vendor: Intel Corporation physical id: 1d.3 bus info: pci@0000:00:1d.3 version: 02 width: 32 bits clock: 33MHz capabilities: uhci bus_master configuration: driver=uhci_hcd latency=0 resources: irq:16 ioport:1880(size=32) *-usbhost product: UHCI Host Controller vendor: Linux 2.6.34.7-56.fc13.i686 uhci_hcd physical id: 1 bus info: usb@5 logical name: usb5 version: 2.06 capabilities: usb-1.10 configuration: driver=hub slots=2 speed=12.0MB/s *-usb:4 description: USB Controller product: N10/ICH 7 Family USB2 EHCI Controller vendor: Intel Corporation physical id: 1d.7 bus info: pci@0000:00:1d.7 version: 02 width: 32 bits clock: 33MHz capabilities: pm debug ehci bus_master cap_list configuration: driver=ehci_hcd latency=0 resources: irq:23 memory:f0604000-f06043ff *-usbhost product: EHCI Host Controller vendor: Linux 2.6.34.7-56.fc13.i686 ehci_hcd physical id: 1 bus info: usb@1 logical name: usb1 version: 2.06 capabilities: usb-2.00 configuration: driver=hub slots=8 speed=480.0MB/s *-usb description: Video product: WebCam SCB-0340N vendor: Namuga. physical id: 8 bus info: usb@1:8 version: 1.00 capabilities: usb-2.00 configuration: driver=uvcvideo maxpower=128mA speed=480.0MB/s *-pci:4 description: PCI bridge product: 82801 Mobile PCI Bridge vendor: Intel Corporation physical id: 1e bus info: pci@0000:00:1e.0 version: e2 width: 32 bits clock: 33MHz capabilities: pci subtractive_decode bus_master cap_list *-isa description: ISA bridge product: NM10 Family LPC Controller vendor: Intel Corporation physical id: 1f bus info: pci@0000:00:1f.0 version: 02 width: 32 bits clock: 33MHz capabilities: isa bus_master cap_list configuration: latency=0 *-storage description: SATA controller product: N10/ICH7 Family SATA AHCI Controller vendor: Intel Corporation physical id: 1f.2 bus info: pci@0000:00:1f.2 logical name: scsi0 version: 02 width: 32 bits clock: 66MHz capabilities: storage msi pm ahci_1.0 bus_master cap_list emulated configuration: driver=ahci latency=0 resources: irq:28 ioport:18e8(size=8) ioport:18dc(size=4) ioport:18e0(size=8) ioport:18d8(size=4) ioport:18c0(size=16) memory:f0604400-f06047ff *-disk description: ATA Disk product: Hitachi HTS54502 vendor: Hitachi physical id: 0.0.0 bus info: scsi@0:0.0.0 logical name: /dev/sda version: PB2O serial: 100620PBN2033SEBXN5T size: 232GiB (250GB) capabilities: partitioned partitioned:dos configuration: ansiversion=5 signature=e472d3c2 *-volume:0 description: Windows NTFS volume physical id: 1 bus info: scsi@0:0.0.0,1 logical name: /dev/sda1 version: 3.1 serial: 543ed20f-73bc-0b40-a6a5-c52f4b9cfed4 size: 19GiB capacity: 20GiB capabilities: primary ntfs initialized configuration: clustersize=4096 created=2010-06-17 22:14:49 filesystem=ntfs label=RECOVERY state=clean *-volume:1 description: Windows NTFS volume physical id: 2 bus info: scsi@0:0.0.0,2 logical name: /dev/sda2 version: 3.1 serial: 4aea-ecee size: 98MiB capacity: 100MiB capabilities: primary bootable ntfs initialized configuration: clustersize=4096 created=2010-06-18 02:55:16 filesystem=ntfs label=SYSTEM state=clean *-volume:2 description: Windows NTFS volume physical id: 3 bus info: scsi@0:0.0.0,3 logical name: /dev/sda3 version: 3.1 serial: 76128e9c-e98b-fa49-ba92-c7f1f9a14dd8 size: 79GiB capacity: 80GiB capabilities: primary ntfs initialized configuration: clustersize=4096 created=2010-06-17 22:14:55 filesystem=ntfs modified_by_chkdsk=true mounted_on_nt4=true resize_log_file=true state=dirty upgrade_on_mount=true *-volume:3 description: Extended partition physical id: 4 bus info: scsi@0:0.0.0,4 logical name: /dev/sda4 size: 132GiB capacity: 132GiB capabilities: primary extended partitioned partitioned:extended *-logicalvolume:0 description: Linux filesystem partition physical id: 5 logical name: /dev/sda5 logical name: / capacity: 131GiB configuration: mount.fstype=ext4 mount.options=rw,seclabel,relatime,barrier=1,data=ordered state=mounted *-logicalvolume:1 description: Linux swap / Solaris partition physical id: 6 logical name: /dev/sda6 capacity: 1023MiB capabilities: nofs *-serial description: SMBus product: N10/ICH 7 Family SMBus Controller vendor: Intel Corporation physical id: 1f.3 bus info: pci@0000:00:1f.3 version: 02 width: 32 bits clock: 33MHz configuration: driver=i801_smbus latency=0 resources: irq:19 ioport:18a0(size=32) *-remoteaccess UNCLAIMED vendor: Intel physical id: 1 capabilities: inbound
Thanks for the bug report. We have reviewed the information you have provided above, and there is some additional information we require that will be helpful in our diagnosis of this issue. Please add drm.debug=0x04 to the kernel command line, restart computer, and attach * your X server config file (/etc/X11/xorg.conf, if available), * X server log file (/var/log/Xorg.*.log) * output of the dmesg command, and * system log (/var/log/messages) to the bug report as individual uncompressed file attachments using the bugzilla file attachment link above. We will review this issue again once you've had a chance to attach this information. Thanks in advance.
Created attachment 449926 [details] output of dmesg command
Created attachment 449928 [details] system log
Created attachment 449930 [details] X server log file
Created attachment 486638 [details] dmesg file
Created attachment 486639 [details] /var/log/messages
Created attachment 486640 [details] Xorg.0.log
I got the same problem using kernel-2.6.38-1.fc15.i686. You'll find the requested files attached. No xorg.conf present. The laptop in question is a Samsung N210 Plus. If more info is desired, please let me know.
*** Bug 582830 has been marked as a duplicate of this bug. ***
I also have an Samsung N210 (P2), same problem. But I do wonder if this ticket is under the right category. I think it should be filled under Kernel, because it needs a kernel module to work.
Unfortunately, this bug is still present in F15. Still no brightness control.
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As I wrote yesterday, this problem is still existing in F15. What kind of additional information is needed?
I have the same problem on my N150 netbook. And also I have a problem with too dim backlight when running on battery. I think the core of these problems is described here -- Bug 647406
When booted while running on battery, I have value 7 in /sys/devices/virtual/backlight/acpi_video0/max_brightness
I'm also having this problem, Fedora 15, lxde, 2.6.38.7-30.fc15.i686
Great, brightness control now works! But unfortunately, screen brightness sometimes flickers - changing text terminal ([Ctrl] + [Alt] + [F...]) stops flickering. 2.6.40.3-0.fc15.i686
As I just discovered, the screen brightness flickering appears: * when Gnome tries to dim the screen (workaround: uncheck the option 'Dim screen to save power' in 'Gnome > System Settings > Screen), * when moving the brightness button slowly around in 'Gnome > System Settings > Screen'. But the problem does not appear when changing the screen brithness stepwise by keyboard commands.
The other problem is (at least for my samsung N145 netbook) that there are only three brightness levels -- minimum, little more than minimum and maximum. For everyday work all of them are unusable.
I am still seeing this problem having upgraded to Fedora 16, kernel 3.1.0-7.fc16.i686
Works great for me now with F16 and 3.1.1-2.fc16.i686.PAE kernel. The only remaining problem is that the brightness level is not preserved after reboot.
Same here: 2.6.41.1-1.fc15.i686. Great!
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