[Bug 216221] Re: Samsung Q70 - error while modprobing video, also can't adjust backlight

[Wildy]

** Summary changed:

- Samsung Q70 - error while modprobing video
+ Samsung Q70 - error while modprobing video, also can't adjust backlight

** Description changed:

  Using Ubuntu Hardy on Samsung Q70, I'll end up with this while trying to modprobe video.ko to adjust the screen backlight.
+ So, the backlight adjustment is performed only on the laptop startup, depending on the laptop plugged into AC or not. Here is the kernel bug() details.
+ 
  [  126.979966] ACPI Error (utglobal-0126): Unknown exception code: 0xFFFFFFFE [20070126]
  [  126.979982] Pid: 5996, comm: modprobe Not tainted 2.6.24-15-generic #1
  [  126.979995]  [<c024c694>] acpi_format_exception+0x35/0x3f
  [  126.980016]  [<c024b496>] acpi_ut_exception+0xc/0x55
  [  126.980030]  [<f8a209e4>] acpi_video_bus_add+0xb0b/0xb1a [video]
  [  126.980049]  [<c01d3a5d>] sysfs_addrm_start+0x6d/0xb0
  [  126.980063]  [<c01d47a3>] sysfs_create_link+0x93/0x110
  [  126.980083]  [<c024fb2f>] acpi_device_probe+0x33/0x7c
  [  126.980097]  [<c027ebc8>] driver_probe_device+0x88/0x190
  [  126.980105]  [<c0212370>] kobject_uevent_env+0xf0/0x3d0
  [  126.980125]  [<c027ee3e>] __driver_attach+0x9e/0xa0
  [  126.980136]  [<c027dffb>] bus_for_each_dev+0x3b/0x60
  [  126.980152]  [<c027ea46>] driver_attach+0x16/0x20
  [  126.980159]  [<c027eda0>] __driver_attach+0x0/0xa0
  [  126.980166]  [<c027e37a>] bus_add_driver+0x8a/0x1e0
  [  126.980184]  [<f8bcc02f>] acpi_video_init+0x2f/0x4d [video]
  [  126.980193]  [<c01516b6>] sys_init_module+0x126/0x19c0
  [  126.980248]  [<c024fe36>] acpi_bus_register_driver+0x0/0x38
  [  126.980274]  [<c01053c2>] sysenter_past_esp+0x6b/0xa9
  [  126.980300]  =======================

** Tags added: backlight laptop q70 samsung

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Samsung Q70 - error while modprobing video, also can't adjust backlight
https://bugs.launchpad.net/bugs/216221
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