Envycontrol does not blacklist nouveau module on Fedora

[tur1ngb0x]

Details:

• CPU: Intel i5 8250U
• GPU: Intel UHD 620 + Nvidia MX150
• Distro: Fedora 36 Beta
• DE: GNOME 42 on Xorg
• Kernel: 5.17.1-300.fc36.x86_64

Description:

• Envycontrol fails to blacklist nouveau kernel module after switching to integrated mode.

Expected behaviour:

• Envycontrol should blacklist nouveau kernel module automatically after switching to integrated mode.

Additional information:

• Unlike Ubuntu (update-initramfs), Envycontrol does not seem to regenerate initramfs when switching modes on Fedora (dracut).

Steps to reproduce:

• git clone https://github.com/geminis3/envycontrol.git
• cd envycontrol
• sudo python ./envycontrol.py --switch integrated

  Graphics mode set to: integrated
  Please reboot your computer for changes to apply!

• reboot
• lspci | grep -iE '(3d|vga)'

  00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 620 (rev 07)

• lsmod | grep -i 'nouveau'

  nouveau              2408448  0
  drm_ttm_helper         16384  1 nouveau
  mxm_wmi                16384  1 nouveau
  ttm                    81920  3 drm_ttm_helper,i915,nouveau
  wmi                    32768  5 intel_wmi_thunderbolt,acer_wmi,wmi_bmof,mxm_wmi,nouveau
  video                  57344  3 acer_wmi,i915,nouveau

Fix:

• Running sudo dracut --force in a terminal to generate initramfs on Fedora, blacklists the nouveau kernel module successfully.
• lsmod | grep -i 'nouveau'

  no output

Suggestions:

• During GPU switching, if the distro is Fedora, then run sudo dracut --force --regenerate-all after switching GPU mode.

  is_fedora = os.path.exists('/etc/fedora-release')
  if is_fedora:
      print('Rebuilding initramfs...')
      p = subprocess.run(['dracut', '--force' '--regenerate-all'], stdout=subprocess.DEVNULL)
      if p.returncode == 0:
          print('Successfully rebuilt initramfs!')
      else:
          print('Error: an error ocurred rebuilding the initramfs')

[bayasdev]

Hello there, @tur1ngb0x can you check if there's a /etc/redhat-release file on your system?

If yes we can target RHEL and all of its derivatives as well as Fedora.

Greetings.

[tur1ngb0x]

Yes.

$ cat /etc/redhat-release 
Fedora release 36 (Thirty Six)

Additionally

$ cat /etc/os-release 
NAME="Fedora Linux"
VERSION="36 (Workstation Edition Prerelease)"
ID=fedora
VERSION_ID=36
VERSION_CODENAME=""
PLATFORM_ID="platform:f36"
PRETTY_NAME="Fedora Linux 36 (Workstation Edition Prerelease)"
ANSI_COLOR="0;38;2;60;110;180"
LOGO=fedora-logo-icon
CPE_NAME="cpe:/o:fedoraproject:fedora:36"
HOME_URL="https://fedoraproject.org/"
DOCUMENTATION_URL="https://docs.fedoraproject.org/en-US/fedora/f36/system-administrators-guide/"
SUPPORT_URL="https://ask.fedoraproject.org/"
BUG_REPORT_URL="https://bugzilla.redhat.com/"
REDHAT_BUGZILLA_PRODUCT="Fedora"
REDHAT_BUGZILLA_PRODUCT_VERSION=36
REDHAT_SUPPORT_PRODUCT="Fedora"
REDHAT_SUPPORT_PRODUCT_VERSION=36
PRIVACY_POLICY_URL="https://fedoraproject.org/wiki/Legal:PrivacyPolicy"
VARIANT="Workstation Edition"
VARIANT_ID=workstation

[bayasdev]

Should be fixed now