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Date:   Sun, 1 May 2022 09:08:15 +0200
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Subject: Re: [PATCHv4] drm/amdgpu: disable ASPM on Intel Alder Lake based
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To:     Richard Gong <richard.gong@amd.com>
Cc:     Dave Airlie <airlied@linux.ie>, Xinhui Pan <xinhui.pan@amd.com>,
        LKML <linux-kernel@vger.kernel.org>,
        dri-devel@lists.freedesktop.org,
        Alex Deucher <alexdeucher@gmail.com>,
        amd-gfx@lists.freedesktop.org, Daniel Vetter <daniel@ffwll.ch>,
        Alexander Deucher <alexander.deucher@amd.com>,
        =?UTF-8?Q?Christian_K=c3=b6nig?= <christian.koenig@amd.com>,
        Mario Limonciello <mario.limonciello@amd.com>
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 <5adfe067-dc00-6567-e218-c5c68670cf5b@amd.com>
From:   Paul Menzel <pmenzel@molgen.mpg.de>
In-Reply-To: <5adfe067-dc00-6567-e218-c5c68670cf5b@amd.com>
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Dear Richard,


Sorry for the late reply.

Am 26.04.22 um 15:53 schrieb Gong, Richard:

> On 4/21/2022 12:35 AM, Paul Menzel wrote:

>> Am 21.04.22 um 03:12 schrieb Gong, Richard:
>>
>>> On 4/20/2022 3:29 PM, Paul Menzel wrote:
>>
>>>> Am 19.04.22 um 23:46 schrieb Gong, Richard:
>>>>
>>>>> On 4/14/2022 2:52 AM, Paul Menzel wrote:
>>>>>> [Cc: -kernel test robot <lkp@intel.com>]
>>>>
>>>> […]
>>>>
>>>>>> Am 13.04.22 um 15:00 schrieb Alex Deucher:
>>>>>>> On Wed, Apr 13, 2022 at 3:43 AM Paul Menzel wrote:
>>>>>>
>>>>>>>> Thank you for sending out v4.
>>>>>>>>
>>>>>>>> Am 12.04.22 um 23:50 schrieb Richard Gong:

[…]

>>>>>>>> I am still not clear, what “hang during suspend/resume” means. I 
>>>>>>>> guess
>>>>>>>> suspending works fine? During resume (S3 or S0ix?), where does 
>>>>>>>> it hang?
>>>>>>>> The system is functional, but there are only display problems?
>>>>> System freeze after suspend/resume.
>>>>
>>>> But you see certain messages still? At what point does it freeze 
>>>> exactly? In the bug report you posted Linux messages.
>>>
>>> No, the system freeze then users have to recycle power to recover.
>>
>> Then I misread the issue? Did you capture the messages over serial log 
>> then?
> 
> I think so. We captured dmesg log.

Then the (whole) system did *not* freeze, if you could still log in 
(maybe over network) and execute `dmesg`. Please also paste the 
amdgpu(?) error logs in the commit message.

> As mentioned early we need support from Intel on how to get ASPM working 
> for VI generation on Intel Alder Lake, but we don't know where things 
> currently stand.

Who is working on this, and knows?


Kind regards,

Paul