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Add HVM Troubleshooting
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PROTechThor
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11
doc.md
11
doc.md
@ -135,13 +135,20 @@ Core documentation for Qubes users.
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* [Making Any File Persistent Using `bind-dirs`](/doc/bind-dirs/)
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* [GUI Configuration](/doc/gui-configuration/)
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* [Resizing Disk Images](/doc/resize-disk-image/)
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* [Troubleshooting UEFI](/doc/uefi-troubleshooting/)
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* [Troubleshooting Newer Hardware](/doc/newer-hardware-troubleshooting/)
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* [Mounting and Decrypting Qubes Partitions from Outside Qubes](/doc/mount-from-other-os/)
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* [KDE](/doc/kde/)
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* [i3 Window Manager](/doc/i3/)
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* [awesome Window Manager](/doc/awesome/)
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### Troubleshooting
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* [Installation Troubleshooting](/doc/installation-troubleshooting/)
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* [UEFI Troubleshooting](/doc/uefi-troubleshooting/)
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* [Suspend/Resume Troubleshooting](/doc/suspend-resume-troubleshooting/)
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* [VM Troubleshooting](/doc/vm-troubleshooting/)
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* [HVM Troubleshooting](/doc/hvm-troubleshooting/)
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### Reference Pages
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* [Command-line Tools](/doc/tools/)
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@ -294,8 +301,6 @@ Unofficial, third-party documentation from the Qubes community and others.
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* [Lenovo ThinkPad Troubleshooting](/doc/thinkpad-troubleshooting/)
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* [Apple MacBook Troubleshooting](/doc/macbook-troubleshooting/)
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* [Getting Sony Vaio Z laptop to work with Qubes](/doc/sony-vaio-tinkering/)
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* [Fixing wireless on suspend & resume](/doc/wireless-troubleshooting/)
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* [How to remove VMs manually](/doc/remove-vm-manually/)
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* [Intel Integrated Graphics Troubleshooting](/doc/intel-igfx-troubleshooting/)
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### Building Guides
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36
external/os-guides/linux-hvm-tips.md
vendored
36
external/os-guides/linux-hvm-tips.md
vendored
@ -14,41 +14,7 @@ Tips for Linux in HVM domain
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How to fix bootup kernel error
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-------------------------------
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The HVM may pause on boot, showing a fixed cursor.
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After a while a series of warnings may be shown similar to this:
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BUG: soft lockup - CPU#0 stuck for 23s! [systemd-udevd:244]
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To fix this:
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1. Kill the HVM.
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1. Start the HVM
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1. Press "e" at the grub screen to edit the boot parameters
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1. Find the /vmlinuz line, and edit it to replace "rhgb" with "modprobe.blacklist=bochs_drm"
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1. Press "Ctrl-x" to start the HVM
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If this solves the problem then you will want to make the change permanent:
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1. Edit the file `/etc/default/grub`.
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1. Find the line which starts:
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~~~
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GRUB_CMDLINE_LINUX=
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~~~
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1. Remove this text from that line:
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~~~
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rhgb
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~~~
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1. Add this text to that line:
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~~~
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modprobe.blacklist=bochs_drm
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~~~
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1. Run this command:
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~~~
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grub2-mkconfig --output=/boot/grub2/grub.cfg
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~~~
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The HVM should now start normally.
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If the HVM pauses on boot and shows a series of warnings, visit [HVM Troubleshooting](/doc/hvm-troubleshooting/#hvm-pauses-on-boot-followed-by-kernel-error) for a fix.
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Screen resolution
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-----------------
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64
user/troubleshooting/hvm-troubleshooting.md
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64
user/troubleshooting/hvm-troubleshooting.md
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@ -0,0 +1,64 @@
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---
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layout: doc
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title: HVM Troubleshooting
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permalink: /doc/hvm-troubleshooting/
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redirect_from:
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- /en/doc/wireless-troubleshooting/
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- /doc/wireless-troubleshooting/
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---
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# HVM Troubleshooting #
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## HVM pauses on boot, followed by kernel error ##
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The HVM may pause on boot, showing a fixed cursor.
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After a while a series of warnings may be shown similar to this:
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BUG: soft lockup - CPU#0 stuck for 23s! [systemd-udevd:244]
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To fix this:
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1. Kill the HVM.
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1. Start the HVM
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1. Press "e" at the grub screen to edit the boot parameters
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1. Find the /vmlinuz line, and edit it to replace "rhgb" with "modprobe.blacklist=bochs_drm"
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1. Press "Ctrl-x" to start the HVM
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If this solves the problem then you will want to make the change permanent:
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1. Edit the file `/etc/default/grub`.
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1. Find the line which starts:
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~~~
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GRUB_CMDLINE_LINUX=
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~~~
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1. Remove this text from that line:
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~~~
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rhgb
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~~~
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1. Add this text to that line:
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~~~
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modprobe.blacklist=bochs_drm
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~~~
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1. Run this command:
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~~~
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grub2-mkconfig --output=/boot/grub2/grub.cfg
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~~~
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The HVM should now start normally.
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## Can't start an OS in an HVM / "Probing EDD (edd=off to disable!... ok" message ##
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If you see a screen popup with SeaBios and 4 lines, last one being `Probing EDD (edd=off to disable!... ok`, then enter the following command from a `dom0` prompt:
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qvm-prefs <HVMname> kernel ""
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## HVM crashes when booting from ISO ##
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If your HVM crashes when trying to boot an ISO, first ensure that ` qvm-prefs <HVMname>` is empty, as shown above.
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If this doesn't help, then disable memory balancing and set the minimum memory to 2GB.
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You can disable memory-balancing in the settings, under the “Advanced” tab.
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To give the VM a RAM of 2GB, open a terminal in `dom0` and enter:
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qvm-prefs <HVMname> memory 2000
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