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Ticket Resolution Summary Owner Reporter
#17841 invalid Virtualbox 5.2.12 causes massive swapping problems on kernel 4.16 and 4.15 Matthew Jurgens
Description

Recently I upgraded from virtualbox 5.2.6 to 5.2.12. From that point on, approximately every 3 days my system would lock up. I discovered that the system was doing huge amounts of swapping and the load average would go so high that the system was non-responsive.

My system has 16GB of RAM and normal load is around 5GB. Most of the rest of the RAM is allocated to cache. When the problem occurred the cache RAM was never released and so my system tried frantically to swap out everything running. Sometimes the OOM killer would be invoked. Once I left the system and it recovered back to normal by itself after about 4 hours. Most of the time I would reboot it using the Magic sys-alt keys as the kernel was still responsive. If I caught the problem early enough I could still use a terminal to run commands. Sometimes I would drop all caches - which worked sometimes but mostly it did not work and the system would still go crazy.

I tried kernel 4.15 and 4.16 which both behaved the same. The problem would always occur between the 3rd and 4th day since the last reboot. I reverted to virtualbox 5.2.6 on kernel 4.16 and now my system has been running for 7 days without issue.

It seems to me that there is something with virtualbox 5.2.12 where it perhaps locks RAM cache spaces and will not free it up (or allow the kernel to) when the system requires memory. I don't even know if that is technically possible, but that's what it looks like

Fedora 27 Host, 16GB RAM, Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz.

#12882 worksforme Ubuntu 14.04 LTS Beta 2, Guest Service video driver 'This device is not working' Matthew Lenz
Description

I installed the guest services on Ubuntu 14.04 LTS Beta 2 and noticed that the interface was lagging. I checked the System Settings / Software & Updates / Additional Drivers and see InnoTek Systemberatung GmbH: Virtual Guest Service 'This device is not working.'

I'm using Ubuntu 13.10 (up to date) as the Host OS.

#17543 fixed 5.2 - bridged WLAN adapter not working (worked in 5.1) -> fixed in 5.2.10 MatthewSabin
Description

Started the conversation here: https://forums.virtualbox.org/viewtopic.php?f=6&t=85345

I run a security testing VM which can't have access to my live network but needs access to the Internet, so I remove the IPv4 configuration from my host's WLAN adapter and associate it with an SSID.

Under 5.1, the guest's NIC bridged to the host WLAN NIC gets an IP address from DHCP on the WLAN and everything worked.

Under 5.2, no IP address is ever received from the DHCP server.

There were several tests performed and a fair amount of data gathered in the forum topic referred to above, let me know what you want to have me collect anew.

I've been following the test builds and development snapshots hoping to find a version where it started working - briefly I was able to get it to work by changing NIC and NIC type, enabling and disabling IPv4 on the host, but haven't been able to do that since December.

Currently on 5.2.97 r120712

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