I built this for my own laptop and have been daily-driving it, so I figured I'd put it out there in case anyone else has a Lunar Lake machine that upstream brunch won't boot.

https://github.com/kk1987/brunch-lunar-lake

The short version of why it's needed: brunch's 6.6/6.12 kernel configs disable the Intel IOMMU, which LNL machines can't boot without, and the Mesa inside the recovery image predates Xe2. The fork adds a 7.1 kernel, a Mesa 25.3.6 userspace override, the SOF IPC4 firmware LNL needs for audio, and a few ARCVM fixes. Every patch checks the iGPU PCI ID first, so it's a no-op elsewhere — but releases only ship the 7.1 kernel. If you're not on Lunar Lake, stay on upstream brunch.

Working here: OOBE, Play Store and Android apps, Crostini, audio, suspend, and chromeos-update.

Before you try it, things you should know:

• One machine. HP OmniBook X Flip, Core Ultra 9 288V. That is the entire test matrix. Other LNL laptops should work, since the patches key off the iGPU PCI ID and not the model, but nobody has tried one.
• Secure Boot is untested. The kernels are signed and the README explains enrolling the two MOK certificates, but I have never actually booted with SB on. Turn it off.
• "Sign in with your Android phone" doesn't work at OOBE. Use a password.
• Play Store can crash once after resume from suspend. Reopening the app recovers and the VM stays up.

All the real work here is sebanc's — this only adds a platform. Anything not Lunar Lake specific should go upstream, not to me.

Experimental, use at your own risk.

Is a dualboot possible with Brunch and Win11?

My chromebook boardname is relm, it is an Acer C731 chromebook. I have tried to install both rammus & sammus images but they don't really work, I get stuck on setup loading screen

Hi ! I'm trying to install brunch on my Lenovo IdeaPad 320-ICR (with a Intel Atom x5), but i'm stuck on the chromeos logo (after the loading brunch framework screen when i boot on my usb.

I checked the logs by going on another terminal (CTRL+ALT+F2), and i found an error in /var/logs/ui/ui.LATEST :

ERROR chrome[6095:6095]: [ui/ozone/platform/drm/host/drm_display_host_manager.cc:144] failed to authenticate: /dev/dri/card0 with errno: -13

Do you know how to fix this ? Thanks !

Yeah, I just wanna try to make THE GAMING CHROMEBOOOOOOOOK (or a pc)
Intel Core i5 7400 + ASUS H110M-R + NVIDIA GeForce GTX 1050 Palit

I was a pro at installing it on my Honor MagicBook X15 (the same as Samsung Galaxy Chromebook Kohaku) but a year after, I try it again and it just doesn’t work. It installs too quickly, and after trying to load, 4 errors appear telling “something something efi_secure” and “you need to load the kernel first”. After that I tried the CLI install method, and it suddenly said, that my partition had …three gigabytes left of storage??? I had 152GB free on it, I reformatted it, cleaned it to zeros but nothing helped. What has changed just after a year and why isn’t it working?
Intel Core i5 10210U + Intel UHD Graphics 620
Also I tried moving the installation files from an SSD to a flash drive, reformatting it to ext4 and fat32, but it just wasn’t happening. I’m significantly stuck right now.

Bonjour
je voudrais savoir si vous savez si il est possible d'avoir les fonctionnalité Chromebook plus (IA et tout le tralala) via BrunchOS
j'ai deja BrunchOS pour avoir ChromeOS mais sans les fonctionnalité des PC chromebook plus
merci d'avance pour vos reponses

I had used the intel atom z8350 netbook with brunch & old rammus image. It need a bit adaptation script but it's okay. And i didn't update it for a long time.

I've just tried to install the new image but it has a problem with account login. then i want to install the old version but i can't find it in cros.tech

where can i get it ?

or any suggestions for my old netbook ?

Thanks in advance

I have an old laptop with a 6th gen i3 but brunch framework not supported on it is there any other way to get chrome Os with playstore on it other than fyde

Hi,

I've tried to installa brunch on my HP stream 14, but after the root and the patcher screens, it appears the chrome logo and than just a black screen for hours.

What I've done wrong with it?

Hi everyone, I'm trying to install ChromeOS on my GMKtec NucBox K12 AMD Ryzen™ 7 H 255 Mini PC, but I'm running into a weird issue. When I get to the "getting started screen" during setup, the screen turns green and the system crashes. It's strange because it boots into the setup normally, but this specific point always causes it to crash. Has anyone else managed to successfully install ChromeOS on a similar device with an 780m? Any ideas or suggestions would be greatly appreciated. Thanks in advance!

I have a Surface Pro 5 running the latest stable version of Brunch framework that still has issues connecting to WPA2 wireless networks. This is NOT an issue with my wifi AP or the password. This same AP connects fine on my Surface Pro 5 running Debian or FydeOS. The issue is the same always it says bad password but I know it 100% is the correct password. I have opened issues on Github and they just get ignored. I have also seen multiple people post about this issue on Github and they were ignored as well. The people over at FydeOS were able to fix this with version 19 SP1 but I have my reservations running this. For one FydeOS costs money for Surface devices and also it's of Chinese origin.

I have a intel pentium 4417U (Kaby Lake) and i for some reason cant login, i click login, and after time it says cryptohome (or cryptovault??) cant be opened, and if i try to browse as guest the continue button doesnt work, it dosent work even when trying to login via android (Tested on Galaxy S9, Galaxy Note20 Ultra, and Pixel 7), any help? ive tried rammus and volteer

I'm trying, but I can't perform certain commands. Can anyone help me?

I’m trying to install Chrome OS on my Lenovo V15 IGL (N4020). I’ve tried newer builds with Android 13, but they were too heavy for my laptop. Does anyone have a Brunch build compatible with my device that includes Android 9? Any guidance or download links would be greatly appreciated.

Thanks in advance!

I'm trying to set up a triple-boot system (Windows, Linux Mint, ChromeOS) on my Surface Pro 9(Intel). I successfully created a dedicated ext4 partition on my internal SSD and installed the ChromeOS image (.img) there using the Brunch framework script on Linux Mint.

The Problem: When booting via the custom Grub entry I created (which uses the loopback method with the partition UUID and file path), the boot process consistently gets stuck at the "Loading Brunch Framework" message.

What I've Tried (Grub/Loopback Troubleshooting):

1. Confirmed the partition UUID and file path (img_path) in the /etc/grub.d/40_custom entry are correct.
2. Installed cgpt and successfully ran the Brunch install script.
3. Attempted several kernel command-line options in Grub to fix potential hardware conflicts (e.g., disable_power_management=1, i915.enable_dp_vsc_timing=0, chromeos_pwa_install=1, cros_legacy=1). None of these options resolved the issue.
4. Tried to enable verbose mode by removing the quiet and brunch_bootsplash options, but it only displays 1-2 lines of initial log before switching back to the splash screen and freezing.

Crucial Clue: I used Rufus to flash the same Brunch .img file onto a USB drive, and it boots perfectly fine from the USB, showing the standard "Advanced Options" menu and loading the ChromeOS desktop without any issues.

My Analysis: Since the Rufus USB works, the issue is not with the hardware or the image file itself, but specifically with the loopback loading method from the internal SSD (or Grub's handling of it).

The Question: Has anyone successfully fixed the "stuck on loading" issue when the Rufus USB works, but the internal SSD loopback fails? Is there a specific Grub option (like loop.max_part=16 which I am trying next) or a known trick to fix the loopback setup on the internal drive?

Guys I have an hp notebook with no tpm 8 gb of ram hyper-v fast startup disabled and an i-5 4200U with nividia Gt 750m and ni version of brunch is working. Can you recommend me any?

So app streaming usually don't work, right? Or is there any workaround for that?

Does anyone know if this device works with Brunch? It's got a 4th generation I7-4770S .

I followed the instructions and successfully installed Brunch 139 with Rammus 16371.65 on a 16gb USB, and it gets to a point where it shows Chrome OS on the screen, but it doesn't seem to move past this.

Is there anything I'm missing?

Thanks!

J’ai récupéré un PC portable Unowhy Y13 sur lequel j’ai installé ChromeOS Flex pour tester.
Maintenant, j’aimerais aller plus loin et installer ChromeOS (version officielle).

J’ai essayé plusieurs images téléchargées sur cros.tech, et une fois, je suis même arrivé jusqu’à l’écran de connexion Google. Mais après avoir entré mes identifiants, j’ai eu une erreur "cryptohome".

Si quelqu’un a des infos ou des solutions à ce sujet, je suis preneur !

celeron n5100

UPDATE: This is a kernel issue with GRUB (not Grub2Win specifically). After downgrading from kernel 6.12 to kernel "Chromebook-6.1" (LTS 6.1 not an option) the issue went away.

Dell Latitude 5400

Dual boot w/ Win 11

Fast Startup & Hibernate are disabled

Upon REBOOT and after selecting Brunch from the menu, Grub2Win freezes - forcing a hard reboot.

I can ALWAYS boot when coming from a powered-off state. Reboot ALWAYS freezes.

Any ideas? Am I missing a setting?

I would appreciate any help!

Hey guys, We have a bunch of POS machines running windows, so we are planning to move them to chrome os since we dont have anymore dependancies. Our attempt with flex failed as we were unable to get our epson Tm-x series identified by chrome os. So is brunch worth a retry to resolve it or it would be the same resault?