From Fedora Project Wiki

(we can rely on X11 logs any longer, because now even with nomodeset Wayland is used (on UEFI). Rewrite the whole test case with the best approach I could find.)
(clarify non-Live environments)
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<li> Boot into the basic graphics mode.
<li> Boot into the basic graphics mode.
<li> After booting into the desktop/installer, open a terminal application.
<li> After booting into the desktop/installer, open a terminal application.
<ul><li>In the installer environment, use ''Ctrl+Alt+F2'' to switch to a virtual terminal.</ul>
<ul><li>In a netinst-style (non-Live) installer environment, use ''Ctrl+Alt+F2'' to switch to a virtual terminal.</ul>
<li> Run the following command to display properties of your graphics card and see if there's any <code>Driver:</code> line present:
<li> Run the following command to display properties of your graphics card and see if there's any <code>Driver:</code> line present:
<pre>$ lspci -kvmm | sed -n '/VGA/,/^$/p'
<pre>$ lspci -kvmm | sed -n '/VGA/,/^$/p'
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(in this case ''i915''; or ''radeon'', ''nouveau'', etc), then please report a bug.
(in this case ''i915''; or ''radeon'', ''nouveau'', etc), then please report a bug.
<li> Run the installer.
<li> Run the installer.
<ul><li>In the installer environment, press ''Alt+Right arrow'' repeatedly until you find the graphical session again.</ul>
<ul><li>In a netinst-style (non-Live) installer environment, press ''Alt+Right arrow'' repeatedly until you find the graphical session again.</ul>
<li> Proceed with installation.
<li> Proceed with installation.
<li> Boot the newly installed system.
<li> Boot the newly installed system.

Revision as of 10:38, 25 October 2022

Associated release criterion
This test case is associated with the Basic_Release_Criteria#expected-image-boot-behavior release criterion. If you are doing release validation testing, a failure of this test case may be a breach of that release criterion. If so, please file a bug and nominate it as blocking the appropriate milestone, using the blocker bug nomination page.
Associated release criterion
This test case is associated with the Fedora_42_Final_Release_Criteria#basic-graphics-mode release criterion. If you are doing release validation testing, a failure of this test case may be a breach of that release criterion. If so, please file a bug and nominate it as blocking the appropriate milestone, using the blocker bug nomination page.


Description

This is to verify that Fedora can be installed in a basic graphics mode, using highly compatible video driver.

Bare metal only
This test case has to be tried on a bare metal system only. We need to ensure that users can boot even with not well supported graphics cards. Graphics is usually not a problem in virtual machines and therefore VM testing is not beneficial here. Please use bare metal system.

Setup

  1. Prepare a live image to be tested, or an installer image allowing to install the graphical desktop of choice.

How to test

  1. At the initial boot screen, check that there is a menu item for booting into a basic graphics mode (usually under the Troubleshooting menu).
  2. Boot into the basic graphics mode.
  3. After booting into the desktop/installer, open a terminal application.
    • In a netinst-style (non-Live) installer environment, use Ctrl+Alt+F2 to switch to a virtual terminal.
  4. Run the following command to display properties of your graphics card and see if there's any Driver: line present: 
    $ lspci -kvmm | sed -n '/VGA/,/^$/p'
Class:	VGA compatible controller
Vendor:	Intel Corporation
Device:	CometLake-H GT2 [UHD Graphics]
SVendor:	Lenovo
SDevice:	Device 22c2
Rev:	05
Module:	i915

    If there's no Driver: line, everything is correct, you're almost certainly running under a fallback graphics driver like simpledrm or vesa. If there's a Driver: line, for example: 

    Driver: i915

    then you're running with a native hardware driver (in this case, i915; other most common drivers include radeon and nouveau). In this case, the fallback graphics were not started properly, please report a bug.

  5. As a second check, run the following command and see which drivers were initialized during boot: 
    $ journalctl -k | grep -F '[drm] Initialized'
jun 10 09:48:08 hydra kernel: [drm] Initialized simpledrm 1.0.0 20200625 for simple-framebuffer.0 on minor 0

    If you only see Initialized simpledrm or no line at all, you should be running on a fallback graphics driver correctly. If you see the initialization of a native hardware driver as well, for example: 

    jun 10 09:48:08 hydra kernel: [drm] Initialized simpledrm 1.0.0 20200625 for simple-framebuffer.0 on minor 0
jun 10 09:48:09 hydra kernel: [drm] Initialized i915 1.6.0 20201103 for 0000:00:02.0 on minor 1

    (in this case i915; or radeon, nouveau, etc), then please report a bug.

  6. Run the installer.
    • In a netinst-style (non-Live) installer environment, press Alt+Right arrow repeatedly until you find the graphical session again.
  7. Proceed with installation.
  8. Boot the newly installed system.
  9. Start a terminal application and verify that the system has been configured to boot with a nomodeset kernel boot argument: 
    $ grep nomodeset /proc/cmdline
BOOT_IMAGE=(hd0,gpt2)/vmlinuz-5.17.14-300.fc36.x86_64 root=UUID=5f7d257e-ceaa-44f7-905f-1fa0ca4b1dbb ro rootflags=subvol=root rd.luks.uuid=luks-b3f3824c-d386-4c66-a69b-2833107b4390 nomodeset rhgb quiet

    If this doesn't print anything, it means it wasn't configured properly, please report a bug.

  10. Repeat steps 4 and 5 to verify that your installed system isn't using a native hardware driver.

Expected Results

  1. Both the installer environment and the installed desktop must use a fallback graphics driver instead of a native hardware driver.
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