Arch Linux

iuno

Member

Registered: 2014-08-09

Posts: 42

[solved] UI scaling problems with plasma 5

I updated the topic, as I got new info but still need help with this issue (see third post).

-----original post-----
[UI elements too big in Plasma 5]

Hi guys,
I have an issue with my Plasma 5 desktop. Some icons are ridiculously big, please see the image linked below. Also notice the bold 'lines' in the taskbar and the weird scrollbar.

screenshot: http://i.snag.gy/E2dWO.jpg

There might be something wrong with a dpi setting? But I found nothing to align it but a dpi setting for fonts (which had been alright already).
Screen resolution is 1920x1080. I also checked if X got screen dimensions right and it was ok.

Maybe someone has seen this before and could help me.
regards

Last edited by iuno (2014-11-14 11:45:41)

iuno

Member

Registered: 2014-08-09

Posts: 42

Re: [solved] UI scaling problems with plasma 5

update: there's no problem with arch or aur-packages. When I boot project neon 5, I have the same issue

iuno

Member

Registered: 2014-08-09

Posts: 42

Re: [solved] UI scaling problems with plasma 5

Hi,
I guess I the problem comes from my monitor sending wrong EDID… I got some info:

While xdpyinfo outputs
  dimensions:    1920x1080 pixels (508x285 millimeters)

xrandr shows
"HDMI2 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 160mm x 90mm"
and resizing via "xrandr --fbmm 508x285" did not work (no error but still showing 160x90mm; xdpyinfo shows the new value if I enter something different)

I tried disabling EDID via a xorg.conf file but it didn't work (intel driver)…

Last edited by iuno (2014-10-17 10:29:02)

iuno

Member

Registered: 2014-08-09

Posts: 42

Re: [solved] UI scaling problems with plasma 5

Sorry for posting again, but could someone help me disabling EDID with intel driver?
Using
Option       "UseEDID" "false"
and
Option       "IgnoreEDID" "true"
in a xorg conf-file did not help

btw. reading from /sys/class/drm/card0-HDMI-A-1/edid with parse-edid also gives me 'DisplaySize 160 90', while xdpyinfo still gets the right 508x285 millimeters.

iuno

Member

Registered: 2014-08-09

Posts: 42

Re: [solved] UI scaling problems with plasma 5

I found the solution in arch wiki (https://wiki.archlinux.org/index.php/KM … s_and_EDID)

I built the EDID binary inside kernel doc. After installing core/linux-docs they can be found inside
/usr/lib/modules/3.17.2-1-ARCH/build/Documentation/EDID/

just make and copy the desired .bin over to /lib/firmware/edid and add the following to kernel cmd line:
drm_kms_helper.edid_firmware=edid/your_edid.bin

Now showing a 24" screen at 96dpi, which is alright

bhokaal

Member

Registered: 2014-04-12

Posts: 12

Re: [solved] UI scaling problems with plasma 5

Hello,
I am having the same problem a above. I followed the instructions suggested to use a custom EDID. The only thing is I use a standard edid/1920x1080.bin instead of building one. Those that make a differnce because that did not help me.
Also another differnce is that I have AMD 7770HD video card. I have tried both with fglrx & open source radeon with same results.

Any further suggestions ?