Hi,
Had purchased a new laptop Samsung X420. Some how Fedora 12 cannot work for the display brightness control. The Fn+Up or Fn+Down are the keys for control brightness Up or Down, but Fedora 12 can't work it.
Strange behavior, when on power, the display stay 100% brightness but on batt, the dispaly when all the way to dim (est. 45% -50% brightness).
I had search in forum for "brightness" but no help, also tried the following:-
1. setpci -s 00:02.1 F4.B=40, no help.
2. tried nomodeset, no hlep.
My lspci show:-
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Int
egrated Graphics Controller (rev 07) (prog-if 00 [VGA controller])
Subsystem: Samsung Electronics Co Ltd Device c060
Flags: bus master, fast devsel, latency 0, IRQ 27
Memory at fa000000 (64-bit, non-prefetchable) [size=4M]
Memory at d0000000 (64-bit, prefetchable) [size=256M]
I/O ports at 1800 [size=8]
Expansion ROM at <unassigned> [disabled]
Capabilities: <access denied>
Kernel driver in use: i915
Kernel modules: i915
00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
Subsystem: Samsung Electronics Co Ltd Device c060
Flags: bus master, fast devsel, latency 0
Memory at fa400000 (64-bit, non-prefetchable) [size=1M]
Capabilities: <access denied>
And dmesg grep pci:-
ACPI: bus type pci registered
pci 0000:00:02.0: reg 10 64bit mmio: [0xfa000000-0xfa3fffff]
pci 0000:00:02.0: reg 18 64bit mmio: [0xd0000000-0xdfffffff]
pci 0000:00:02.0: reg 20 io port: [0x1800-0x1807]
pci 0000:00:02.1: reg 10 64bit mmio: [0xfa400000-0xfa4fffff]
pci 0000:00:1a.0: reg 20 io port: [0x1820-0x183f]
pci 0000:00:1a.1: reg 20 io port: [0x1840-0x185f]
pci 0000:00:1a.2: reg 20 io port: [0x1860-0x187f]
pci 0000:00:1a.7: reg 10 32bit mmio: [0xfa704800-0xfa704bff]
pci 0000:00:1a.7: PME# supported from D0 D3hot D3cold
pci 0000:00:1a.7: PME# disabled
pci 0000:00:1b.0: reg 10 64bit mmio: [0xfa700000-0xfa703fff]
pci 0000:00:1b.0: PME# supported from D0 D3hot D3cold
pci 0000:00:1b.0: PME# disabled
pci 0000:00:1c.0: PME# supported from D0 D3hot D3cold
pci 0000:00:1c.0: PME# disabled
pci 0000:00:1c.3: PME# supported from D0 D3hot D3cold
pci 0000:00:1c.3: PME# disabled
pci 0000:00:1d.0: reg 20 io port: [0x1880-0x189f]
pci 0000:00:1d.1: reg 20 io port: [0x18a0-0x18bf]
pci 0000:00:1d.2: reg 20 io port: [0x18c0-0x18df]
pci 0000:00:1d.7: reg 10 32bit mmio: [0xfa704c00-0xfa704fff]
pci 0000:00:1d.7: PME# supported from D0 D3hot D3cold
pci 0000:00:1d.7: PME# disabled
pci 0000:00:1f.2: reg 10 io port: [0x1818-0x181f]
pci 0000:00:1f.2: reg 14 io port: [0x180c-0x180f]
pci 0000:00:1f.2: reg 18 io port: [0x1810-0x1817]
pci 0000:00:1f.2: reg 1c io port: [0x1808-0x180b]
pci 0000:00:1f.2: reg 20 io port: [0x18e0-0x18ff]
pci 0000:00:1f.2: reg 24 32bit mmio: [0xfa704000-0xfa7047ff]
pci 0000:00:1f.2: PME# supported from D3hot
pci 0000:00:1f.2: PME# disabled
pci 0000:00:1f.3: reg 10 64bit mmio: [0x000000-0x0000ff]
pci 0000:00:1f.3: reg 20 io port: [0x1c00-0x1c1f]
pci 0000:02:00.0: reg 10 64bit mmio: [0xf6000000-0xf600ffff]
pci 0000:02:00.0: supports D1
pci 0000:02:00.0: PME# supported from D0 D1 D3hot
pci 0000:02:00.0: PME# disabled
pci 0000:00:1c.0: bridge io port: [0x2000-0x2fff]
pci 0000:00:1c.0: bridge 32bit mmio: [0xf6000000-0xf7ffffff]
pci 0000:00:1c.0: bridge 64bit mmio pref: [0xf0000000-0xf1ffffff]
pci 0000:04:00.0: reg 10 io port: [0x3000-0x30ff]
pci 0000:04:00.0: reg 18 64bit mmio: [0xf4000000-0xf4000fff]
pci 0000:04:00.0: reg 20 64bit mmio: [0xf2000000-0xf200ffff]
pci 0000:04:00.0: reg 30 32bit mmio: [0x000000-0x01ffff]
pci 0000:04:00.0: supports D1 D2
pci 0000:04:00.0: PME# supported from D0 D1 D2 D3hot D3cold
pci 0000:04:00.0: PME# disabled
pci 0000:00:1c.3: bridge io port: [0x3000-0x3fff]
pci 0000:00:1c.3: bridge 32bit mmio: [0xf8000000-0xf9ffffff]
pci 0000:00:1c.3: bridge 64bit mmio pref: [0xf2000000-0xf5ffffff]
pci 0000:00:1e.0: transparent bridge
PCI: pci_cache_line_size set to 64 bytes
pci 0000:00:1c.0: PCI bridge, secondary bus 0000:02
pci 0000:00:1c.0: IO window: 0x2000-0x2fff
pci 0000:00:1c.0: MEM window: 0xf6000000-0xf7ffffff
pci 0000:00:1c.0: PREFETCH window: 0x000000f0000000-0x000000f1ffffff
pci 0000:00:1c.3: PCI bridge, secondary bus 0000:04
pci 0000:00:1c.3: IO window: 0x3000-0x3fff
pci 0000:00:1c.3: MEM window: 0xf8000000-0xf9ffffff
pci 0000:00:1c.3: PREFETCH window: 0x000000f2000000-0x000000f5ffffff
pci 0000:00:1e.0: PCI bridge, secondary bus 0000:06
pci 0000:00:1e.0: IO window: disabled
pci 0000:00:1e.0: MEM window: disabled
pci 0000:00:1e.0: PREFETCH window: disabled
pci 0000:00:1c.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
pci 0000:00:1c.0: setting latency timer to 64
pci 0000:00:1c.3: PCI INT D -> GSI 19 (level, low) -> IRQ 19
pci 0000:00:1c.3: setting latency timer to 64
pci 0000:00:1e.0: setting latency timer to 64
pci_bus 0000:00: resource 0 io: [0x00-0xffff]
pci_bus 0000:00: resource 1 mem: [0x000000-0xffffffffffffffff]
pci_bus 0000:02: resource 0 io: [0x2000-0x2fff]
pci_bus 0000:02: resource 1 mem: [0xf6000000-0xf7ffffff]
pci_bus 0000:02: resource 2 pref mem [0xf0000000-0xf1ffffff]
pci_bus 0000:04: resource 0 io: [0x3000-0x3fff]
pci_bus 0000:04: resource 1 mem: [0xf8000000-0xf9ffffff]
pci_bus 0000:04: resource 2 pref mem [0xf2000000-0xf5ffffff]
pci_bus 0000:06: resource 3 io: [0x00-0xffff]
pci_bus 0000:06: resource 4 mem: [0x000000-0xffffffffffffffff]
pci 0000:00:02.0: Boot video device
pcieport-driver 0000:00:1c.0: irq 24 for MSI/MSI-X
pcieport-driver 0000:00:1c.0: setting latency timer to 64
pcieport-driver 0000:00:1c.3: irq 25 for MSI/MSI-X
pcieport-driver 0000:00:1c.3: setting latency timer to 64
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
pciehp: PCI Express Hot Plug Controller Driver version: 0.4
input: Logitech Optical USB Mouse as /devices/pci0000:00/0000:00:1d.0/usb6/6-1/6-1:1.0/input/input7
input: WebCam SCB-0340N as /devices/pci0000:00/0000:00:1a.7/usb1/1-3/1-3:1.0/input/input9
ALSA sound/pci/hda/hda_codec.c:3862: autoconfig: line_outs=1 (0x14/0x0/0x0/0x0/0x0)
ALSA sound/pci/hda/hda_codec.c:3866: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
ALSA sound/pci/hda/hda_codec.c:3870: hp_outs=1 (0x15/0x0/0x0/0x0/0x0)
ALSA sound/pci/hda/hda_codec.c:3871: mono: mono_out=0x0
ALSA sound/pci/hda/hda_codec.c:3882: inputs: mic=0x18, fmic=0x19, line=0x0, fline=0x0, cd=0x0, aux=0x0
ALSA sound/pci/hda/patch_realtek.c:1181: realtek: No valid SSID, checking pincfg 0x40038205 for NID 0x1d
ALSA sound/pci/hda/patch_realtek.c:1197: realtek: Enabling init ASM_ID=0x8205 CODEC_ID=10ec0269
input: HDA Digital PCBeep as /devices/pci0000:00/0000:00:1b.0/input/input10
lshal -m do not capture any input too. So the Fn + Up/Down keys can't work.
Your help is very much appreciated, thanks.
---------- Post added at 01:42 AM CST ---------- Previous post was at 12:17 AM CST ----------
more finding.
lshal for laptop_panel
udi = '/org/freedesktop/Hal/devices/computer_backlight'
info.addons = {'hald-addon-generic-backlight'} (string list)
info.capabilities = {'laptop_panel'} (string list)
info.category = 'laptop_panel' (string)
info.interfaces = {'org.freedesktop.Hal.Device.LaptopPanel'} (string list)
info.parent = '/org/freedesktop/Hal/devices/computer' (string)
info.product = 'Generic Backlight Device' (string)
info.subsystem = 'backlight' (string)
info.udi = '/org/freedesktop/Hal/devices/computer_backlight' (string)
laptop_panel.access_method = 'general' (string)
laptop_panel.brightness_in_hardware = false (bool)
laptop_panel.num_levels = 8 (0x8) (int)
linux.hotplug_type = 2 (0x2) (int)
linux.subsystem = 'backlight' (string)
linux.sysfs_path = '/sys/devices/virtual/backlight/acpi_video0' (string)
hope to have solution ...
.
Linear Mode
