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In recent weeks, when the attempt system boot Ubuntu, the following information appears on the screen with black background:

Ext4-fs (sda6): couldn't mount as ext3 due to feature incompatibilities. Ext4-fs (sda6): couldn't mount as ext2 due to feature incompatibilities.

Friends, can you tell me how to interpret these messages, and what could do about it?

Thanks

Daniel González
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3 Answers3

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Apparently you marked the partition as ext3 in /etc/fstab, when in fact it is ext4 ( or you have since converted it with tune2fs ). Change the ext3 designation to ext4 in /etc/fstab.

psusi
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  • Thanks for your answer. But I found it easier to reinstall the operating system and putting on ubuntu Mate 15.10. Apparently, the new kernel updates were causing me the problem because since that I have not updated the problem didn't appear again. – Daniel González Apr 15 '16 at 16:10
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I saw this bright red message in my dmesg output and got curious although I am not experiencing any problems. I checked the hint from psusi's answer but /etc/fstab is set to ext4 on my system. After some more research I found this post in the arch forum with an explanation that sounds resonable to me. The gist: The ext-fs driver supports multiple versions and checks which one works if none is specified at boot time. My kernel command line reads root=/dev/xvda ro console=xvc0 console=hvc0 so it looks like auto-detection is required.

wedi
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This just happened to me recently after a package upgrade leaving me with a low resolution login screen that wouldn't work. (Ubuntu 16.04)

  • Type Ctrl+Alt+F1 to get a terminal and login via this terminal.

  • Run following commands:

    sudo apt update
sudo apt upgrade
sudo reboot

Hope this helps ...

d a i s y
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John
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