Learned a couple things about Chrome that I didn’t know.
chrome://net-internals/#DNS
chrome://flags (disable async DNS)
Category Archives: Linux Notes - Page 2
Chrome DNS Troubleshooting
Posted by brad
on September 4, 2014
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Seabios 1.7.5 and Qemu 2.1
Posted by brad
on September 3, 2014
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So apparently I may need a new version of Seabios (1.7.5) to use the new version of qemu from the ppa I was tryng…
I can’t find a Trusty port, so I’m going to use a .deb package from “Jessie” which is (I think) the version Ubunutu 14.04 is based off of.
http://http.us.debian.org/debian/pool/main/s/seabios/seabios_1.7.5-1_all.deb
sudo dpkg -i seabios_1.7.5-1_all.deb
sudo add-apt-repository ppa:jacob/virtualisation
sudo apt-get update
sudo apt-get dist-upgrade
Well, it doesn’t crash…
It recognizes the USB controller, but I can’t see the either USB memory stick or my external drive…
Properly add, then hopefully remove ppa…
Posted by brad
on September 2, 2014
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Note that the problems I’m having with this ppa are more likely something I’ve done wrong. I’m hoping properly add, then remove the ppa with ppa-purge. That should, in theory downgrade me back to the original versions of qemu. Otherwise, I may just remove them, and force reinstall the parts I think I need to get back to the old Windows VM working. Then I might try the PPA again.
Proper way to add:
sudo add-apt-repository ppa:jacob/virtualisation
sudo apt-get update
sudo apt-get dist-upgrade
ppa-purge ppa:jacob/virtualisation
apt-get remove –purge qemu*
apt-get remove –purge virt-manager virt-viewer sudo apt-get install libvirt-bin
apt-get remove –purge spice-vdagent virt-viewer libspice-client-gtk-3.0-4 virt-manager qemu-system spice-client spice-client-gtk python-spice-client-gtk
apt-get autoremove
apt-get update
apt-get dist-upgrade
sudo add-apt-repository ppa:jacob/virtualisation
sudo apt-get update
sudo apt-get dist-upgrade
apt-get install spice-vdagent virt-viewer libspice-client-gtk-3.0-4 virt-manager qemu-system spice-client spice-client-gtk python-spice-client-gtk libvirt-bin qemu
ppa-purge ppa:jacob/virtualisation
AT THIS POINT THINGS WORKED — I was apparently back the state I was in before adding the ppa. Now, glutton for punishment that I am, I’m trying again:
sudo add-apt-repository ppa:jacob/virtualisation
sudo apt-get update
sudo apt-get dist-upgrade
No joy…
so…
sudo ppa-purge ppa:jacob/virtualisation
sudo apt-get update
sudo apt-get dist-upgrade
And back to working… Still no usb 3… Maybe if I syspreped the windows image or installed fresh from this version of qemu????
Remote-Viewer
Posted by brad
on September 2, 2014
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Why can’t I seem to remember that I seem to need remote-viewer for two-headed VM’s? URL format: spice://host:port — for me that means localhost:5900. Need coffee…
The Qemu adventure continues
Posted by brad
on September 2, 2014
2 comments
The PPA didn’t do so well on my notebook — or at least with my Windows Guest VM. It now reboots in a continuous loop. I can start it with the qemu that I previously compiled, but not with the PPA version. May try installing a Linux guest and see if it works with the one out of the PPA. That is really the only type of guest I had tried with the PPA version… Ah well, I am getting to be an old hand at installing Ubuntu… Worst case is I get to do that again.
Taking the plunge and adding a ppa for QEMU 2.1 and its cohorts…
Posted by brad
on September 1, 2014
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Because I’m basically a pretty lazy admin (and the repository looks really attractive), I’m going to go ahead and add the following to my /etc/apt/sources.list on my notebook for further testing with a Windows guest.
deb http://ppa.launchpad.net/jacob/virtualisation/ubuntu trusty main
deb-src http://ppa.launchpad.net/jacob/virtualisation/ubuntu trusty main
This is the one I mentioned in an earlier post. It is maintained by Jacob Zimmermann who appears to know what he’s doing. Which definitely puts him well ahead of me…
This looks like what I will be getting with this…
The following packages were automatically installed and are no longer required:
libgtk-vnc-1.0-0 python-appindicator python-gtk-vnc
Use ‘apt-get autoremove’ to remove them.
The following packages will be REMOVED:
qemu-keymaps
The following NEW packages will be installed:
gir1.2-gtk-vnc-2.0 gir1.2-libvirt-glib-1.0 gir1.2-spice-client-glib-2.0
gir1.2-spice-client-gtk-3.0 libvirt-glib-1.0-0 python-ipaddr qemu qemu-user
qemu-user-binfmt
The following packages will be upgraded:
libcgmanager0 libcgmanager0:i386 libvirt-bin libvirt0 python-libvirt
qemu-system qemu-system-arm qemu-system-common qemu-system-mips
qemu-system-misc qemu-system-ppc qemu-system-sparc qemu-system-x86
qemu-utils virt-manager virtinst
16 upgraded, 9 newly installed, 1 to remove and 0 not upgraded.
Need to get 32.4 MB of archives.
After this operation, 70.9 MB of additional disk space will be used.
KVM/QEMU USB 3.0 Passthrough Update
Posted by brad
on September 1, 2014
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Installed onto a sacrificial lamb machine…
Created a linux guest (both host and guest are Ubuntu 14.04 trusty)
using
-device nec-usb-xhci,id=xhci \
-device usb-host,bus=xhci.0,vendorid=0x13fe,productid=0x5500
seemed to work with a custom compiled qemu on the Linux Guest
I found a virtualization ppa that I also tested at https://launchpad.net/~jacob/+archive/ubuntu/virtualisation
It is credited to Jacob Zimmermann, but I’m not sure if this is a personal project of his (or something more official). I added it on my test system and things worked well (including virtual manager). Not sure I’m comfortably relying on it for anything production wise, but it was darned handy for testing! (So thank you Jacob Zimmermann whoever you are!)
Since I am sure I had tried this recipe with my previous Windows 7 guest, I am going back to revisit it and see if I can make it work with different Windows drivers. Maybe I’ve been fighting an issue on the client side rather than with qemu…
Qemu 2.1 USB 3.0 PassThrough Fails (Hall of Shame) Ubuntu 14.04 Windows 7 Guest
Posted by brad
on August 29, 2014
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I guess I just need to suck it up and setup a Linux guest to see what (if any) parameters work and to rule out driver issues on the guest…
Windows 7 guest drivers from here: http://www.driverscape.com/manufacturers/renesas/usb (NEC 3.0 Controller)
Using Ubuntu 14.04 with a custom complied qemu 2.1 with all the defaults (except PREFIX=/opt/qemu)
With this (uncommented part),
I get:
qemu-system-x86_64: hw/usb/hcd-xhci.c:896: xhci_events_update: Assertion `intr->er_full’ failed.
Aborted (core dumped)
also from dmesg:
[16948.896976] usb 4-4: reset SuperSpeed USB device number 10 using xhci_hcd
[16948.914304] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff88023580f600
Tail end of qemu invocation shell script (showing previous ideas).
-device nec-usb-xhci,id=xhci,bus=pci.0,addr=0x14.0 \
-device usb-host,bus=xhci.0,vendorid=0x13fe,productid=0x5100
#-device usb-host,bus=xhci.0,hostbus=4,hostport=10
#-device usb-host,bus=xhci.0,vendorid=0x13fe,productid=0x5100
#below changes everytime I remove/reinsert drive
#-device usb-host,bus=xhci.0,hostbus=3,hostport=11
#below failed with core dump usb_handle_packet assertion failed
#-device usb-host,vendorid=0x13fe,productid=0x5100
#vfio-bind 0000:00:14.0
#-device vfio-pci,host=14:00.0,bus=pcie.0
#-device usb-storage,bus=xhci.4,port=2
#-device usb-host,vendorid=0x0480,productid=0x200
-device nec-usb-xhci,id=xhci,bus=pci.0,addr=0x14.0 \
-device usb-host,bus=xhci.0,vendorid=0x13fe,productid=0x5100
#-device usb-host,bus=xhci.0,hostbus=4,hostport=10
#-device usb-host,bus=xhci.0,vendorid=0x13fe,productid=0x5100
#below changes everytime I remove/reinsert drive
#-device usb-host,bus=xhci.0,hostbus=3,hostport=11
#below failed with core dump usb_handle_packet assertion failed
#-device usb-host,vendorid=0x13fe,productid=0x5100
#vfio-bind 0000:00:14.0
#-device vfio-pci,host=14:00.0,bus=pcie.0
#-device usb-storage,bus=xhci.4,port=2
#-device usb-host,vendorid=0x0480,productid=0x200
Next steps, maybe I should try this with a Linux guest to test the parameters and rule out driver issues?
Virtual Box UUID grr….
Posted by brad
on August 22, 2014
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VBoxManage internalcommands sethduuid imagefile.vdi
Google Drive on Linux
Posted by brad
on August 19, 2014
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google-drive-ocamlfuse -label acc1 gdrive.acc1
To umount:
fusermount -u gdrive.acc1
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