JLS
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LAB VMs Display Resolution

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Anybody having Lab VM display resolution issues? 

I am taking on line course D0407 and when I lunch the course' VMs 

to complete the hands on labs the display resolution is ugly

and could not see even the characters that I am typing.. 

Any bad experiences like this? 

Thanks in advnce,

 

 

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Ashish_Lingayat
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Re: LAB VMs Display Resolution

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Hi @JLS,

You can change the resolution of the lab machine By going to the System settings -> Display and select the resolution which suits you best.

Also, as suggested by @NirZilka it should also help you in increasing the size of the terminal.

Happy learning!

Regards,

Ashish Lingayat

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NirZilka
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Re: LAB VMs Display Resolution

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You can change the workstation linux resolution (in settings) according to your display (play with it until you'll find a good one) , and in terminal app you can zoom in to see larger text if you need (In 407 you'll need just the terminal).

Regards,

Nir.

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upsetwithrh
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Re: LAB VMs Display Resolution

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I had the same issue.  The display resolution of 1920 x 1024 should have been but acceptable but the remote console/terminal window was only filled half the screen. I could barely read it. Seriously, the tools seemed to date back to the 80's. The whole experience was off putting.  I had other issues where the console wouldn't show the boot menu preventing the exam from being completed (I'm so very not happy about that either) but that's another issue. 

 

 

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Ashish_Lingayat
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Re: LAB VMs Display Resolution

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Hi @JLS,

You can change the resolution of the lab machine By going to the System settings -> Display and select the resolution which suits you best.

Also, as suggested by @NirZilka it should also help you in increasing the size of the terminal.

Happy learning!

Regards,

Ashish Lingayat

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Deanna
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Re: LAB VMs Display Resolution

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Thank you @Ashish_Lingayat for the best practices on adjusting LAB VM display resolution. @upsetwithrh have you tried this recommended practice and did it help?

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Deanna
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upsetwithrh
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Re: LAB VMs Display Resolution

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When JL5 says "screen size", I am sure what he means is the console font size in the multi-user (not graphical) target. Different animal altogether.

In SysV init, prior to systemd, you could run setfont or set the font as a bootloader parameter. You can stilll set it in grub but it changes again as soon as systemd starts so it's over-ridden immediately. Running setfont does not interactively reset the font. In the virtual exam there is a custom app under "activities" that connects to the virtual host console and neither that screen nor the font in the console can be resized. This is something different than "teminal" settings offered as a solution. .

The virtual exam runs in a 1920x1080 display and the client app that connects to the guest vm's height is about half of that size/width or around 900x500 pixels. In physical terms, 4 lines of text were around about 1/4 inch high or 1/16 in per line on a 14" laptop display. There are 72 pts per inch or 18 points in 1/4 in. For 4 lines of text to fit in 18 points, the font size would have to be around 5 points or so after allowing for leading. Fonts below 5.5 points are generally unreadable on your typical monitor and may be rendered as "greek text" (e.g glyphs) instead - The font metrics version of Lorum Ipsum Dolor sit amet.

Getting back to the problem - the console font can be set in /etc/vconsole.conf - it will not be persisted through the systemd startup procees but if you change the font to something larger (say ter-c18n or larger) you can force the font to reload. I tried and found that by running sytemctl isolate multi-user.target while in multi-user.target the console font would update.So to fix the issues, modify /usr/lib/systemd/systemd-vconsole-setup and set After=sysinit.service. It took about 30 seconds to google an answer once you understand the root cause is systemd sequence related, And yes, I did test this on my RHEL laptop set to boot into multi-user mode and the login prompt font is now slightly larger.  Whether the exam tool will work with a different screen size is another matter.

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upsetwithrh
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Re: LAB VMs Display Resolution

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different exams may run different tools so i cannot say that will fix JL5's issue but the default font out of the box on the physical console is too small for my aging eyes and this seems to work well.

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JLS
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Re: LAB VMs Display Resolution

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Thank you all for your great advce and feedback. 

I found this and hope it makes sense.

The resolution issue on the LAB VM happned only when I used a chrome incognito window. 

The resolution was better without any system settings changes when I used just a regular chrome window.

Thanks again and cheers,

 

 

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