linux-kernel - Re: X450LCP lost abillity to turn the screen off

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Date:   Sun, 10 Feb 2019 23:06:14 -0200
From:   Marcos Paulo de Souza <marcos.souza.org@...il.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        João Paulo Rechi Vita <jprvita@...lessm.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Platform Driver <platform-driver-x86@...r.kernel.org>
Subject: Re: X450LCP lost abillity to turn the screen off



On 2/10/19 9:45 PM, Andy Shevchenko wrote:
> On Sun, Feb 10, 2019 at 9:24 PM Marcos Paulo de Souza
> <marcos.souza.org@...il.com> wrote:
>>
>> Hi,
>>
>> Since 5.0.0-rc4 I vefiried that my ASUS laptop
> 
> Can you be more specific, what model, BIOS version, etc (also would be
> nice to have dmi strings from it, I guess dmidecode tool would help).

dmidecode attached.

>> cannot turn the screen of
>> anymore. There were several commits in 5.0 merge window touching this
>> functionality like:
>>
>>   71b12beaf12f platform/x86: asus-nb-wmi: Drop mapping of 0x33 and 0x34 scan codes
>>   b3f2f3799a97 platform/x86: asus-nb-wmi: Map 0x35 to KEY_SCREENLOCK
>>   78f3ac76d9e5 platform/x86: asus-wmi: Tell the EC the OS will handle the display off hotkey
>>
> 
> Can you bisect or just try to revert one-by-one from above and see
> which one is a culprit?

I already did some primary analysis, and it seems the commit 3f2f3799a97
maps the x035 (which is Alt+f7 in my laptop) to SCREENLOCK, which is
wrong because alt+f7 should be Screen Toggle. I will try to revert this
commit, or remap to KEY_DISPLAYTOGGLE or KEY_DISPLAY_OFF, and test if it
works.

But yes, I'll do my best to track the problem ASAP at my side. Please
let me know if I can provide any additional information.

> 
> 
>> I didn't have time to track it down, and my previous working kernel was 4.12
>> (default in openSUSE Leap 15), but I hope I will be able to test older kernels this week.
>>
>> --
>> Thanks,
>> Marcos
> 
> 
> 

View attachment "dmidecode.txt" of type "text/plain" (10039 bytes)

Download attachment "pEpkey.asc" of type "application/pgp-keys" (1787 bytes)