On Wed, Apr 2, 2014 at 4:43 AM, Bo Lorentsen <bl@xxxxxxx> wrote:
On 04/01/2014 05:38 PM, Shuduo Sang wrote:While looking at the latest 3.14 kernel release (just released yesterday), it looks like something like it are present :
On Tue, Apr 1, 2014 at 10:21 PM, Bo Lorentsen <bl@xxxxxxx <mailto:bl@xxxxxxx>> wrote:
On 04/01/2014 04:15 PM, Shuduo Sang wrote:
Hi Bo,
Can you post your .config?
But of cause :-) please note that this is the default for Debian
Jessie (3.14rc7 amd64), I have not changed anything.
/BL
Interesting. I encountered a similar issue on a Lenovo laptop and has been fixed by the patch which mentioned
in http://marc.info/?l=linux-acpi&m=137568804802772&w=2. So I thought latest vanilla kernel tree should contains the patch.
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/gpu/drm/i915/intel_panel.c?id=refs/tags/v3.14#n513
It seems like they just added other max values, but basically it looks like it is there ?
I tried to install Debian Jessie and clone latest linus's git tree then reuse debian's config file of /boot to compile 3.14 kernel. The brightness works good at my side.
/BL
<mailto:bl@xxxxxxx> <mailto:bl@xxxxxxx <mailto:bl@xxxxxxx>>><mailto:ibm-acpi-devel@lists.sourceforge.net
wrote:
Hi ...
Now that my X1C are working I am quite happy about it, and
now I
am looking at the details.
When I boot the laptop (Debian Jessie + 3.14rc7 + Shuduo's
patch)
I end up in a blank screen, the only way to get anywhere is to
suspend it and resume, and then i have a beautiful login
screen,
and the laptop works nicely until next reboot.
In the dmesg i get the following remarks :
[ 1.605320] thinkpad_acpi: ThinkPad BIOS GRET32WW (1.09
), EC
unknown
[ 1.605322] thinkpad_acpi: Lenovo ThinkPad X1 Carbon
2nd, model
20A7005LMD
[ 1.607060] thinkpad_acpi: Unsupported brightness
interface,
please contact ibm-acpi-devel@lists.sourceforge.net
<mailto:ibm-acpi-devel@lists.sourceforge.net><mailto:ibm-acpi-devel@lists.sourceforge.net
<mailto:ibm-acpi-devel@lists.sourceforge.net>>
[ 1.607142] thinkpad_acpi: unknown version of the HKEY
interface: 0x200
[ 1.607198] thinkpad_acpi: please report this to
ibm-acpi-devel@lists.sourceforge.net
<mailto:ibm-acpi-devel@lists.sourceforge.net>
<mailto:ibm-acpi-devel@lists.sourceforge.net>>
I know the HKEY problem is worked on, but could the
"brightness
interface" problem be related to the blank screen after
boot problem ?
/BL
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