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Re: Failure to use 3840x2160 30hz with Intel 620 chipset

From Pierre Couderc <pierre@couderc.eu>
Newsgroups linux.debian.user
Subject Re: Failure to use 3840x2160 30hz with Intel 620 chipset
Date 2021-07-09 09:10 +0200
Message-ID <CySO5-pH-5@gated-at.bofh.it> (permalink)
References <CyJhL-2pp-3@gated-at.bofh.it> <CyJrr-2I6-3@gated-at.bofh.it> <CyJUt-2Rm-1@gated-at.bofh.it>
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On 7/8/21 11:34 PM, Felix Miata wrote:
>
>>> the PC crashes (all is black, need to power off).
>   											
>> You should have no need of gtf or mode creation with 620 graphics. Mode creation
>> via xrandr is an anachronism. X knows very well how to auto generate modes when
>> provided with needed specs. If EDID, the usual source for the data, is broken,
>> then provide the specs via:

Yes, EDID is wrong and does not show 3840x2160 warranted by Samsung for UR59C 32".
  

>> 	/etc/X11/xorg.conf.d/50-monitor.conf
>> containing the horizontal sync and vertical refresh rates for your display, e.g.:
>>
>> 	Section "Monitor"
>> 	    Identifier	"Default Monitor"
>> 		HorizSync	28-85
>> 		VertRefresh	50-100
> 		Option	"PreferredMode"	"3840x2160"
>> 	EndSection
>>
>
This has no effect but I suppose the problem is due to the 2 screen 
configuration. So I have tried replacing Identifier with :

  Identifier    "HDMI-1"

But it is not better...

I have put in https://paste.debian.net/1203873/
the content of  .local/share/xorg/Xorg.0.log

It seems that the Modeline 3840x2160 is recognized, but the 30hz 
limitation is not expressed.

Acer swift5 specifies 3840x2160 but with a 30hz limitation, no more 
frequency.

Thanks you very much

PC

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Thread

Failure to use 3840x2160 30hz with Intel 620 chipset Pierre Couderc <pierre@couderc.eu> - 2021-07-08 23:00 +0200
  Re: Failure to use 3840x2160 30hz with Intel 620 chipset Felix Miata <mrmazda@earthlink.net> - 2021-07-08 23:10 +0200
    Re: Failure to use 3840x2160 30hz with Intel 620 chipset Felix Miata <mrmazda@earthlink.net> - 2021-07-08 23:40 +0200
      Re: Failure to use 3840x2160 30hz with Intel 620 chipset Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-07-09 00:40 +0200
      Re: Failure to use 3840x2160 30hz with Intel 620 chipset Pierre Couderc <pierre@couderc.eu> - 2021-07-09 09:10 +0200
        Re: Failure to use 3840x2160 30hz with Intel 620 chipset Felix Miata <mrmazda@earthlink.net> - 2021-07-10 02:20 +0200
          Re: Failure to use 3840x2160 30hz with Intel 620 chipset Pierre Couderc <pierre@couderc.eu> - 2021-07-10 23:10 +0200
            Re: Failure to use 3840x2160 30hz with Intel 620 chipset Felix Miata <mrmazda@earthlink.net> - 2021-07-11 00:40 +0200
              Re: Failure to use 3840x2160 30hz with Intel 620 chipset Pierre Couderc <pierre@couderc.eu> - 2021-07-12 07:30 +0200
              Re: Failure to use 3840x2160 30hz with Intel 620 chipset Felix Miata <mrmazda@earthlink.net> - 2021-07-12 10:20 +0200
                Re: Failure to use 3840x2160 30hz with Intel 620 chipset Pierre Couderc <pierre@couderc.eu> - 2021-07-16 08:40 +0200
                Re: Failure to use 3840x2160 30hz with Intel 620 chipset Pierre Couderc <pierre@couderc.eu> - 2021-07-16 08:40 +0200
                Re: Failure to use 3840x2160 30hz with Intel 620 chipset Felix Miata <mrmazda@earthlink.net> - 2021-07-16 10:00 +0200
                Re: Failure to use 3840x2160 30hz with Intel 620 chipset Pierre Couderc <pierre@couderc.eu> - 2021-07-16 12:10 +0200
              Re: Failure to use 3840x2160 30hz with Intel 620 chipset Pierre Couderc <pierre@couderc.eu> - 2021-07-17 08:20 +0200

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