Re: [Bug 1761751] Re: [REGRESSION] drm/amd/dc: Add dc display driver (v2)

[David Henningsson]

I don't think it is the same bug. I have a card with HDMI and DVI 
connectors (XFX RX 460). The HDMI connector is connected to the monitor, 
the DVI connector is unplugged.

// David

On 2018-04-30 17:40, Harry Wentland wrote:
> Replied on the ticket.
>
> If this is about non-functioning LVDS or VGA I'm aware of it and trying
> to find time to find a good solution.
>
> Harry
>
> On 2018-04-30 11:14 AM, Joseph Salisbury wrote:
>> Hi Harry,
>>
>> A kernel bug report was opened against Ubuntu [0].  After a kernel
>> bisect, it was found the following commit introduced the bug:
>>
>>
>> commit 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c
>> Author: Harry Wentland 
>> Date:   Tue Sep 12 15:58:20 2017 -0400
>>
>>      drm/amd/dc: Add dc display driver (v2)
>>
>>
>> The regression was introduced as of v4.15-rc1 and still exists in
>> current mainline.  The commit does not need to be reverted to resolve
>> the bug.  Disabling the CONFIG_DRM_AMD_DC_PRE_VEGA option makes the bug
>> go away.
>> 
>> I was hoping to get your feedback, since you are the patch author.  Do
>> you think gathering any additional data will help diagnose this issue?
>> 
>>
>> Thanks,
>>
>> Joe
>>
>>
>> [0] http://pad.lv/1761751
>>

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Title:
  Black screen on 18.04 + AMD RX460

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[Bug 1761751] Re: [REGRESSION] drm/amd/dc: Add dc display driver (v2)

[Harry Wentland]

Replied on the ticket.

If this is about non-functioning LVDS or VGA I'm aware of it and trying
to find time to find a good solution.

Harry

On 2018-04-30 11:14 AM, Joseph Salisbury wrote:
> Hi Harry,
>
> A kernel bug report was opened against Ubuntu [0].  After a kernel
> bisect, it was found the following commit introduced the bug:
>
>
> commit 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c
> Author: Harry Wentland 
> Date:   Tue Sep 12 15:58:20 2017 -0400
>
>     drm/amd/dc: Add dc display driver (v2)
>
>
> The regression was introduced as of v4.15-rc1 and still exists in
> current mainline.  The commit does not need to be reverted to resolve
> the bug.  Disabling the CONFIG_DRM_AMD_DC_PRE_VEGA option makes the bug
> go away.
>    
> I was hoping to get your feedback, since you are the patch author.  Do
> you think gathering any additional data will help diagnose this issue?
>    
>
> Thanks,
>
> Joe
>
>
> [0] http://pad.lv/1761751
>

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1761751

Title:
  Black screen on 18.04 + AMD RX460

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https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1761751/+subscriptions

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