Date: Tue, 09 Jul 2013 21:19:13 +0200 From: Matthias Petermann <matthias@d2ux.net> To: freebsd-current@freebsd.org Subject: Re: Fixing X220 Video The Right Way (and trying to apply the same fix to X121e) Message-ID: <51DC6231.60000@d2ux.net> In-Reply-To: <201307091156.43848.jhb@freebsd.org> References: <512A6FFF.2060603@gmail.com> <201306141139.16728.jhb@freebsd.org> <20130708104128.Horde.4uMDgEJsnvTlAjpUPueiyQ1@d2ux.org> <201307091156.43848.jhb@freebsd.org>
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Am 09.07.2013 17:56, schrieb John Baldwin:
> On Monday, July 08, 2013 4:41:28 am Matthias Petermann wrote:
>> Hello,
>>
>> I applied the patch, trying to get brightness controls for my X121e.
>>
>> But it looks like I need a different loader.conf setting.
>>
>> hw.pci0.0.2.0.handle="\\\\_SB_.PCI0.PEG.VID"
>>
>> doesn't work. In my ASl there is only one device providing DOD / DOS:
>>
>> Scope (_SB.PCI0)
>> {
>> Device (GFX0)
>> {
>> Name (_ADR, 0x00020000) // _ADR: Address
>> Method (_DOS, 1, NotSerialized) // _DOS: Disable Output
>> Switching
>> {
>> Store (And (Arg0, 0x07), DSEN)
>> If (LEqual (And (Arg0, 0x03), Zero))
>> {
>> If (CondRefOf (HDOS))
>> {
>> HDOS ()
>> }
>> }
>> }
>>
>> Method (_DOD, 0, NotSerialized) // _DOD: Display Output
> Devices
>> {
>> If (CondRefOf (IDAB))
>> {
>> IDAB ()
>> }
>> Else
>> {
> So this is the \_SB_.PCI0.GFX0 device. However, you should kldload acpi_video
> and see if it already attaches to this device (devinfo -v can be helpful here
> as it will show the ACPI handle of the parent of the acpi_video device). If
> it does, then this patch can't help you.
>
Hi John,
thanks for this hint. After "kldload acpi_video" devinfo -v shows the
following (truncated):
nexus0
acpi0
pcib0 pnpinfo _HID=PNP0A08 _UID=0 at handle=\_SB_.PCI0
pci0
hostb0 pnpinfo vendor=0x8086 device=0x0104 subvendor=0x17aa
subdevice=0x21ed class=0x060000 at slot=0 function=0
vgapci0 pnpinfo vendor=0x8086 device=0x0116
subvendor=0x17aa subdevice=0x21ed class=0x030000 at slot=2 function=0
handle=\_SB_.PCI0.GFX0
agp0
drm0
drmn0
acpi_video0
Assuming the patch cannot help me, do you have an idea what I could
check next?
I can control the brightness with
acpi_call -p '\VBRU'
acpi_call -p '\VBRD'
https://d2ux.org/owncloud/public.php?service=files&t=7022f90cea5e48da7fa65806c0d66091
Regards,
Matthias
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