o1e
Mission Specialist
Mission Specialist
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Cannot Boot Remote Exam Live ISO USB for Remote Exam, Boot hanging at 100%

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Hello all,

i’m having some issues with the boot of the Remote Exam Live ISO.

During the preparation for the Remote Exam for ROL Course DO288, i tried to boot my Laptop using the Remote Exam Live ISO. I'm following the docs available here: https://www.redhat.com/en/resources/remote-exams-preparation-ebook.

Downloaded https://static.redhat.com/downloads/training-certification/rhrexboot.iso and written it to USB Stick by using the dd utility.

The boot process is starting until the screen "environment is loading into memory" appears, it counts up to 100% and then nothing more is happening. 

I tried different USB-Stick, always the same result.

For tests, i also used the rhrexboot-2020-08.iso Image, which i found as reference in an redhat Issue description, this one is working for me. Boot is without error, and the hardware compatibility checks are successful.

I plan to do the exam soon, thanks to advice how to proceed. I only have one Laptop available for the training/exam, it's a Lenovo Thinkpad P50.

Greetings

Oliver

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39 Replies
Travis
Moderator
Moderator
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A new exam ISO has been released for creating a USB boot disk that has most of the video drivers installed and fixed the issues I was having on a selection of Lenovo and other systems.

The new ISO is available and should have the following MD5Sum 

478157b7675223468d83253a241a1fd5

Hopefully this will address all issues with the Lenovo systems that haven't been working due to some video implementations and graphics cards.

Thanks to the exam team and @Curtis for working on this issue.

@Geoff@Jacqueline  and @Florian for information.

Travis Michette, RHCA XIII
https://rhtapps.redhat.com/verify?certId=111-134-086
SENIOR TECHNICAL INSTRUCTOR / CERTIFIED INSTRUCTOR AND EXAMINER
Red Hat Certification + Training
  • 416 Views

Do you have a link for the new ISO?  The ISO I downloaded shows an MD5Sum of

8343f9e8cc4115664d31d970d5d5539e66144e33

Thanks

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PetrCihlar
Flight Engineer
Flight Engineer
  • 411 Views

The current ISO link is
https://static.redhat.com/downloads/training-certification/rhrexboot.iso
MD5 is
478157b7675223468d83253a241a1fd5You can fidn the llink also in the Instructional PDF document, the md5 there is not updateded yet.

 

Geoff
Moderator
Moderator
  • 689 Views

Many thanks all ... much appreciated ...

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  • 361 Views

I tried latest image but Lenova Thinkpad Gen2 laptops still have audio driver problem.

 

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FS3
Mission Specialist
Mission Specialist
  • 353 Views

Mine too. Thinkpad E15 Gen2.

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PetrCihlar
Flight Engineer
Flight Engineer
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Audio drivers? Means the internal mic not recognized and the speakers not working? Speakers are not needed for the exam. The internal mic can be replaced by the mic inside the external webcam, a standalone USB mic, or a USB headset. 

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I also have problems with my P50 Thinkpad laptop. In my case the ISO starts without problem (I'm using the 478157b7675223468d83253a241a1fd5 version), but when I use ONLY my external screen the laptop slows down terribly. If I turn back with the options extended/duplicate the slowdowns disappear. I have tried with two different monitors, but the problem is always there.

Another test I will do is change the hdmi connection to a usb-c / displayport adapter to connect the laptop to my external display, but if this test also fails, could I use the rhrexboot-2020-08.iso image for the exam?

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PetrCihlar
Flight Engineer
Flight Engineer
  • 162 Views

Yes, you can use the rhrexboot-2020-08.iso if it works for you better and you pass the compatibility test. Regarding the slowdown. It is probably caused but incompatible video drivers. The video is not accelerated. Sometimes you can workaround by different way of connecting the monitor and setting the mirror mode. Some laptops also allow swapping the video from discrete to integrated (Intel) video card in BIOS

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Thank you for your suggestion, now I have solved the problem. What I have done is to force the use of the nvidia graphic card in the BIOS and change the hdmi input port version of my external monitor to 1.4. In this case I'm able to use the iso image 478157b7675223468d83253a241a1fd5 without any kind of problem.

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