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#1 2019-08-13 12:47:10

cr7wonnabe
Member
Registered: 2019-07-25
Posts: 8

[solved]Dell xps 13 9380 - Problem with screen flickering -whiskeylake

Hi guys,

i bought this new notebook with the following vga chipset:

 00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 620 (Whiskey Lake) (rev 02) 

sometimes i have problems with screen flickering and glitches (i use only the i915 builtin module in kernel), and sometimes the screen become like freeze.


Tried to investigating, i disable the DBC (via https://wiki.archlinux.org/index.php/De … s_Control) e the only error i see in dmes is this one:

 [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun 

I found a lot of different solution for this error but i know what is the right one for the whiskey lake chipset.

Any tips?

thanks

Last edited by cr7wonnabe (2019-08-15 10:20:12)

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#2 2019-08-13 13:07:48

seth
Member
Registered: 2012-09-03
Posts: 12,303

Re: [solved]Dell xps 13 9380 - Problem with screen flickering -whiskeylake

I found a lot of different solution for this error

Which one?

This one?
https://wiki.archlinux.org/index.php/In … flickering

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#3 2019-08-15 10:19:42

cr7wonnabe
Member
Registered: 2019-07-25
Posts: 8

Re: [solved]Dell xps 13 9380 - Problem with screen flickering -whiskeylake

seth wrote:

I found a lot of different solution for this error

Which one?

This one?
https://wiki.archlinux.org/index.php/In … flickering

Oh, God, I'm ashamed, I read this line wrong:

Note that the enable_psr=1 kernel parameter appears not to work properly

from https://wiki.archlinux.org/index.php/De … s_Control)

it's 0 not 1 hmm

indeed now my screen works fine, thanks man smile

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#4 2019-08-15 15:51:48

pencuse
Member
From: Germany
Registered: 2008-05-12
Posts: 17

Re: [solved]Dell xps 13 9380 - Problem with screen flickering -whiskeylake

According to this topic if you have the kernel 5.2.8, you don't need the workaround enable_psr=0 any more. HTH.

Last edited by pencuse (2019-08-15 15:54:39)


Computer: Dell Latitude E7440 - CPU: Intel Core i7-4600 - Harddisk: PM851 256 GB SSD - RAM: 8 GB DDR3L - Graphics: Intel HD 4400 (integrated in the CPU)
Enabled at UEFI: Virtualization, TPM - SecureBoot disabled
OS: Lubuntu 19.04+Arch Linux

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#5 2019-08-16 08:29:20

cr7wonnabe
Member
Registered: 2019-07-25
Posts: 8

Re: [solved]Dell xps 13 9380 - Problem with screen flickering -whiskeylake

pencuse wrote:

According to this topic if you have the kernel 5.2.8, you don't need the workaround enable_psr=0 any more. HTH.

Very nice, i'll try it asap, thanks man

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