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#1 2017-02-23 20:21:43

cyrf0006
Member
Registered: 2016-02-05
Posts: 47

[SOLVED]xrandr - Problem detecting native display

Hi,

After the initial BL installation, I have resolution problems. It seems that xrandr do not recognize my laptop screen (should be 1366x768).

$ xrandr
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1920 x 1080, current 1920 x 1080, maximum 1920 x 1080
default connected 1920x1080+0+0 0mm x 0mm
   1920x1080      0.00* 

There is no options if I do Preferences->Display->ARandR

Any cue?

Last edited by cyrf0006 (2017-02-23 20:22:38)

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#2 2017-02-23 20:29:26

damo
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Registered: 2015-08-20
Posts: 6,734

Re: [SOLVED]xrandr - Problem detecting native display

It is likely that you have recent hardware, so need a newer kernel and/or graphics.


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#3 2017-02-23 20:59:58

cyrf0006
Member
Registered: 2016-02-05
Posts: 47

Re: [SOLVED]xrandr - Problem detecting native display

Indeed, it is likely. But I don't know where to start!

More info:

$ cat /var/log/Xorg.0.log | grep Intel
[     4.952] (II) intel: Driver for Intel(R) Integrated Graphics Chipsets:
[     4.978] (II) VESA(0): VESA VBE OEM: Intel(R) SKL/KBL Mobile/Desktop Graphics Chipset Accelerated VGA BIOS
[     5.583] (II) VESA(0): VESA VBE OEM: Intel(R) SKL/KBL Mobile/Desktop Graphics Chipset Accelerated VGA BIOS
00:02.0 VGA compatible controller: Intel Corporation Device 1916 (rev 07)

Last edited by cyrf0006 (2017-02-23 21:08:09)

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#4 2017-02-23 21:03:33

damo
....moderator....
Registered: 2015-08-20
Posts: 6,734

Re: [SOLVED]xrandr - Problem detecting native display

cyrf0006 wrote:

Indeed, it is likely. But I don't know where to start!

Maybe search the forum? tongue

How to install a newer kernel version in BunsenLabs


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#5 2017-02-23 21:11:16

cyrf0006
Member
Registered: 2016-02-05
Posts: 47

Re: [SOLVED]xrandr - Problem detecting native display

I am running the Testing distro (Deuterium). So I guess I am already on the newest kernel.

I was thinking of ideas to deal with X.org stuff maybe?

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#6 2017-02-23 21:18:57

damo
....moderator....
Registered: 2015-08-20
Posts: 6,734

Re: [SOLVED]xrandr - Problem detecting native display

You can show kernel and graphics information with

uname -r
lspci -knn | grep -iA2 vga

Please use [ code ] tags for posting the terminal output


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#7 2017-02-23 21:24:04

Head_on_a_Stick
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From: London
Registered: 2015-09-29
Posts: 9,093
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Re: [SOLVED]xrandr - Problem detecting native display

cyrf0006 wrote:

I am running the Testing distro (Deuterium).

Deuterium is a point release of the *stable* version of BunsenLabs and runs the stock Debian jessie kernel.

That kernel version does not include support for hardware introduced after the stable release because of the potential to introduce new bugs and security vulnerabilities along with a general prohibition on API changes.

To gain such support (and the potential bugs and vulnerabilities that go along with this), you will need to source the kernel from the jessie-backports repositories.

For Intel Broadwell or newer graphics cards, this guide will be needed:

https://forums.bunsenlabs.org/viewtopic.php?id=1185

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#8 2017-02-23 21:46:27

stevep
MX Linux Developer
Registered: 2016-08-08
Posts: 381

Re: [SOLVED]xrandr - Problem detecting native display

I will bet a cookie that the SKL/KBL in the output stands for "Skylake/Kabylake" (they have similar architectures).

[     4.978] (II) VESA(0): VESA VBE OEM: Intel(R) SKL/KBL Mobile/Desktop Graphics Chipset Accelerated VGA BIOS

OK, I have the same GPU on my laptop; it's a Skylake 520, so I keep the cookie.

Don't forget the backports firmware-misc-nonfree package for your hardware.

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#9 2017-02-23 23:30:49

cyrf0006
Member
Registered: 2016-02-05
Posts: 47

Re: [SOLVED]xrandr - Problem detecting native display

[SOLVED]

This solution referred in post #7 did the job. You rule BL team!

For reference, this problem occurred on a Dell Latitude E7470.

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#10 2017-02-24 00:14:21

damo
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Registered: 2015-08-20
Posts: 6,734

Re: [SOLVED]xrandr - Problem detecting native display

For future reference, you can edit the title of your first post and add [SOLVED] wink


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#11 2017-02-24 12:51:56

cyrf0006
Member
Registered: 2016-02-05
Posts: 47

Re: [SOLVED]xrandr - Problem detecting native display

Thanks,
May you just point out how to edit the title (I coudn't find!)

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#12 2017-02-24 13:45:15

hhh
Gaucho
From: High in the Custerdome
Registered: 2015-09-17
Posts: 16,158
Website

Re: [SOLVED]xrandr - Problem detecting native display

If you hit the edit button on your first post, you can edit both the post and the subject title. Manually add [SOLVED] to the title. wink


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