On 29.10.2015 04:03, Alex Deucher wrote:
> On Wed, Oct 28, 2015 at 3:11 AM, Michel Dänzer wrote:
>> On 28.10.2015 01:43, Alex Deucher wrote:
>>> On Tue, Oct 27, 2015 at 12:23 PM, Michael Burian
>>> wrote:
On 10/27/15 16:10, Alex Deucher wrote:
>
> It would appear that your sys
On 10/28/15 20:03, Alex Deucher wrote:
>>
>> My only doubt about this patch is: Should we also fall back to the old
>> beahviour in the !(rdev->mode_info.firmware_flags &
>> ATOM_BIOS_INFO_BL_CONTROLLED_BY_GPU) case?
>
> Theoretically, it's not necessary, but I guess better safe than sorry.
> Upda
On 28.10.2015 01:43, Alex Deucher wrote:
> On Tue, Oct 27, 2015 at 12:23 PM, Michael Burian
> wrote:
>> On 10/27/15 16:10, Alex Deucher wrote:
>>
>>>
>>> It would appear that your system does not use the gpu backlight
>>> controller. Either it's lying or messing with the GPU backlight
>>> contro
On Wed, Oct 28, 2015 at 3:11 AM, Michel Dänzer wrote:
> On 28.10.2015 01:43, Alex Deucher wrote:
>> On Tue, Oct 27, 2015 at 12:23 PM, Michael Burian
>> wrote:
>>> On 10/27/15 16:10, Alex Deucher wrote:
>>>
It would appear that your system does not use the gpu backlight
controller
On 27.10.2015 17:44, Michael Burian wrote:
> On 10/27/15 03:36, Michel Dänzer wrote:
>>>
>>> [0] contains dmesg output with your patch applied (which fixes the
>>> backlight issue)
>>
>> This is very surprising: The patch just adds some debugging output, it's
>> not supposed to have any functiona
On 10/27/15 17:43, Alex Deucher wrote:
>
> I see the problem. We don't enable native backlight control on older
> asics like yours by default. Does the attached patch help?
>
Yes, backlight is on again. (tested against mainline:
858e904bd71dd0057a548d6785d94ce5ec4aeabd)
thanks
On 10/27/15 16:10, Alex Deucher wrote:
>
> It would appear that your system does not use the gpu backlight
> controller. Either it's lying or messing with the GPU backlight
> controller causes some bad interaction with whatever does control it.
> Does the attached radeon patch help? I'm also at
On Tue, Oct 27, 2015 at 12:23 PM, Michael Burian
wrote:
> On 10/27/15 16:10, Alex Deucher wrote:
>
>>
>> It would appear that your system does not use the gpu backlight
>> controller. Either it's lying or messing with the GPU backlight
>> controller causes some bad interaction with whatever does
Michael, please keep the Cc: list intact.
On 26.10.2015 19:46, Michael Burian wrote:
> On 10/26/15 10:32, Michel Dänzer wrote:
>> On 25.10.2015 04:25, Michael Burian wrote:
>>>
>>> # first bad commit: [5a633828b4b2bef343826afcb0a70770c4911c55] drm/radeon:
>>> Restore LCD backlight level on res
On Tue, Oct 27, 2015 at 6:06 AM, Michael Burian
wrote:
> On 10/27/15 10:17, Michel Dänzer wrote:
>>
>> I'm not familiar with the ATOM bytecode, but since the number of
>> bytecode instructions executed seems the same in both cases, I suspect
>> that dig->backlight_level == 0 => ATOM_LCD_BLOFF is
On 10/27/15 10:17, Michel Dänzer wrote:
>
> I'm not familiar with the ATOM bytecode, but since the number of
> bytecode instructions executed seems the same in both cases, I suspect
> that dig->backlight_level == 0 => ATOM_LCD_BLOFF is executed. (The
> debugging output in my patch would have prov
On 10/27/15 03:36, Michel Dänzer wrote:
>>
>> [0] contains dmesg output with your patch applied (which fixes the backlight
>> issue)
>
> This is very surprising: The patch just adds some debugging output, it's
> not supposed to have any functional effect. Also, I don't see any of the
> debugging
On 25.10.2015 04:25, Michael Burian wrote:
> hi,
>
> after updating the kernel from linux-stable[0] v4.2.3 to v4.2.4 on my
> hp compaq nx9420 laptop (Debian Jessie, amd64), the backlight is turned off
> within the first couple of seconds during boot.
>
> The situation persists (Xorg seems to be r
On Mon, Oct 26, 2015 at 5:32 AM, Michel Dänzer wrote:
> On 25.10.2015 04:25, Michael Burian wrote:
>> hi,
>>
>> after updating the kernel from linux-stable[0] v4.2.3 to v4.2.4 on my
>> hp compaq nx9420 laptop (Debian Jessie, amd64), the backlight is turned off
>> within the first couple of second
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