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Merge branch 'uefi-troubleshooting' of https://github.com/PROTechThor/qubes-doc into PROTechThor-uefi-troubleshooting
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Andrew David Wong
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doc.md
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doc.md
@ -112,7 +112,6 @@ 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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@ -122,6 +121,7 @@ Core documentation for Qubes users.
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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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* [Home directory is out of disk space error](/doc/out-of-memory/)
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* [Installing on system with new AMD GPU (missing firmware problem)](https://groups.google.com/group/qubes-devel/browse_thread/thread/e27a57b0eda62f76)
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* [How to install an Nvidia driver in dom0](/doc/install-nvidia-driver/)
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@ -4,18 +4,20 @@ title: UEFI Troubleshooting
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permalink: /doc/uefi-troubleshooting/
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---
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Troubleshooting UEFI related problems
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========================================
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# Troubleshooting UEFI related problems #
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Change installer kernel parameters in UEFI
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---------------------
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## Successfully installed in legacy mode, but had to change some kernel parameters ##
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If you've installed successfully in legacy mode but had to change some kernel parameters for it to work, you should try installing in UEFI mode with the same parameters.
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**Change the xen configuration on a USB media**
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01. Attach the usb disk, mount the EFI partition (second partition available on the disk)
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02. As `su`, edit your xen config (`EFI/BOOT/BOOTX64.cfg`) changing the `kernel` key to add your kernel parameters on the boot entry of your choice
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03. Install using your modified boot entry
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02. Open a terminal and enter the command `sudo su -`. Use your preferred text editor (e.g `nano`) to edit your xen config (`EFI/BOOT/BOOTX64.cfg`):
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~~~
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nano EFI/BOOT/BOOTX64.cfg
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~~~
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03. Change the `kernel` key to add your kernel parameters on the boot entry of your choice
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04. Install using your modified boot entry
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**Change xen configuration directly in an iso image**
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01. Get EFI partition boundaries `parted Qubes-R4.0-rc4-x86_64.iso unit B print`
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@ -25,14 +27,16 @@ If you've installed successfully in legacy mode but had to change some kernel pa
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05. Save your changes, unmount and dd to usb device
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Installation freezes before displaying installer
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-----------------------------------------------------------
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## Installation freezes before displaying installer ##
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If you have an Nvidia card, see also [Nvidia Troubleshooting](/doc/nvidia-troubleshooting/#disabling-nouveau).
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### Removing `noexitboot` and `mapbs` ###
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Some systems can freeze with the default UEFI install options.
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You can try the following to remove `noexitboot` and `mapbs`.
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If you have an Nvidia card, see also [Nvidia Troubleshooting](/doc/nvidia-troubleshooting/#disabling-nouveau).
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1. Follow the [steps here](/doc/uefi-troubleshooting/#change-installer-kernel-parameters-in-uefi) to edit the `[qubes-verbose]` section of your installer's `BOOTX64.cfg`.
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1. Follow the [steps here](/doc/uefi-troubleshooting/#successfully-installed-in-legacy-mode-but-had-to-change-some-kernel-parameters) to edit the `[qubes-verbose]` section of your installer's `BOOTX64.cfg`.
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You want to comment out the `mapbs` and `noexitboot` lines.
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The end result should look like this:
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@ -59,16 +63,33 @@ This is also a good time to make permanent any other changes needed to get the i
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5. Go back to `tty6` (Ctrl-Alt-F6) and click `Reboot`.
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6. Continue with setting up default templates and logging in to Qubes.
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### Changing `options=console=` parameter to `none` ###
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Installation freezes before displaying installer / disable EFI runtime services
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------------------------------------------------------------------------------
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If removing `noexitboot` and `mapbs` did not help, you can try changing the `options=console=` parameter to `none`. The detailed solution can be found in the comments of [this GitHub issue](https://github.com/QubesOS/qubes-issues/issues/5383)
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1. Follow the [steps here](/doc/uefi-troubleshooting/#successfully-installed-in-legacy-mode-but-had-to-change-some-kernel-parameters) to edit the `[qubes-verbose]` section of your installer's `BOOTX64.cfg`.
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You want to change `options=console=vga` to `options=console=none`.
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The end result should look like this:
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~~~
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[qubes-verbose]
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options=console=none efi=attr=uc
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noexitboot=1
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mapbs=1
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kernel=vmlinuz inst.stage2=hd:LABEL=Qubes-R4.0-x86_64 i915.alpha_support=1
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ramdisk=initrd.img
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~~~
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2. Boot the installer and continue to install as normal
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### Disable EFI runtime services ###
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On some early, buggy UEFI implementations, you may need to disable EFI under Qubes completely.
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This can sometimes be done by switching to legacy mode in your BIOS/UEFI configuration.
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If that's not an option there, or legacy mode does not work either, you can try the following to add `efi=no-rs`.
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Consider this approach as a last resort, because it will make every Xen update a manual process.
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1. Follow the [steps here](/doc/uefi-troubleshooting/#change-installer-kernel-parameters-in-uefi) to edit the `[qubes-verbose]` section of your installer's `xen.cfg`.
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1. Follow the [steps here](/doc/uefi-troubleshooting/#successfully-installed-in-legacy-mode-but-had-to-change-some-kernel-parameters) to edit the `[qubes-verbose]` section of your installer's `xen.cfg`.
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You want to modify the `efi=attr=uc` setting and comment out the `mapbs` and `noexitboot` lines.
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The end result should look like this:
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@ -105,13 +126,11 @@ Consider this approach as a last resort, because it will make every Xen update a
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Whenever there is a kernel or Xen update for Qubes, you will need to follow [these steps](/doc/uefi-troubleshooting/#boot-device-not-recognized-after-installing) because your system is using the fallback UEFI bootloader in `[...]/EFI/BOOT` instead of directly booting to the Qubes entry under `[...]/EFI/qubes`.
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Installation from USB stick hangs on black screen
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---------------------
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## Installation from USB stick hangs on black screen ##
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Some laptops cannot read from an external boot device larger than 8GB. If you encounter a black screen when performing an installation from a USB stick, ensure you are using a USB drive less than 8GB, or a partition on that USB lesser than 8GB and of format fat32.
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Some laptops cannot read from an external boot device larger than 8GB. If you encounter a black screen when performing an installation from a USB stick, ensure you are using a USB drive less than 8GB, or a partition on that USB lesser than 8GB and of format FAT32.
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Installation completes successfully but then boot loops or hangs on black screen
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---------------------
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## Installation completes successfully but then boot loops or hangs on black screen ##
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There is a [common bug in UEFI implementation](http://xen.markmail.org/message/f6lx2ab4o2fch35r) affecting mostly Lenovo systems, but probably some others too.
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While some systems need `mapbs` and/or `noexitboot` disabled to boot, others require them enabled at all times.
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@ -152,8 +171,7 @@ Or if you have already rebooted after the first stage install and have encounter
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4. Continue with setting up default templates and logging in to Qubes.
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Installation completes successfully but then system crash/restarts on next boot
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-------------------------------------------
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## Installation completes successfully but then system crash/restarts on next boot ##
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Some Dell systems and probably others have [another bug in UEFI firmware](http://markmail.org/message/amw5336otwhdxi76).
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These systems need `efi=attr=uc` enabled at all times.
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@ -180,8 +198,7 @@ Or if you have already rebooted after the first stage install and have encounter
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4. Continue with setting up default templates and logging in to Qubes.
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Boot device not recognized after installing
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------------------------------------------
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## Boot device not recognized after installing ##
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Some firmware will not recognize the default Qubes EFI configuration.
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As such, it will have to be manually edited to be bootable.
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@ -202,8 +219,7 @@ This will need to be done after every kernel and Xen update to ensure you use th
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cp /boot/efi/EFI/qubes/xen-4.8.3.efi /boot/efi/EFI/BOOT/BOOTX64.efi
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Installation finished but "Qubes" boot option is missing and xen.cfg is empty
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--------------------------------------------------------------------------------------
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## Installation finished but "Qubes" boot option is missing and xen.cfg is empty / Installation fails with "failed to set new efi boot target" ##
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In some cases installer fails to finish EFI setup and leave the system without a Qubes-specific EFI configuration.
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In such a case you need to finish those parts manually.
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@ -237,8 +253,7 @@ You can do that just after installation (switch to `tty2` with Ctrl-Alt-F2), or
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efibootmgr -v -c -u -L Qubes -l /EFI/qubes/xen.efi -d /dev/sda -p 1 "placeholder /mapbs /noexitboot"
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Accessing installer Rescue mode on UEFI
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---------------------------------------
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## Accessing installer Rescue mode on UEFI ##
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In UEFI mode, the installer does not have a boot menu, but boots directly into the installation wizard.
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To get into Rescue mode, you need to switch to tty2 (Ctrl+Alt+F2) and then execute:
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