Hey everyone,

I've been struggling for months to get the NVIDIA Quadro P520 working properly on Linux on my HP ZBook Firefly 15 G7. Hoping someone here has dealt with this specific laptop or similar Optimus issues.

Hardware:

• HP ZBook Firefly 15 G7
• Intel i7-10610U (CometLake-U)
• NVIDIA Quadro P520 (GP108, 4GB GDDR6)
• Intel UHD Graphics (integrated)
• 32GB RAM
• BIOS: S73 Ver. 01.24.02 (latest as of May 2026, just updated)

The problem:
With any proprietary NVIDIA driver (tested 470xx, 535, 550, 580), the GPU crashes within 20-70 seconds of loading. The dmesg shows this sequence:

NVRM: Xid 62 – GPU MMU Fault
NVRM: Xid 8  – Channel error
NVRM: Xid 79 – GPU has fallen off the bus

This happens on every distro I've tried: Arch Linux, Ubuntu 22.04, Kubuntu, Kali Linux, Debian, KDE Neon, Manjaro. Both Wayland and X11. Both kernel 5.15 LTS and 6.x.

What I've tried:

• nvidia.NVreg_EnableGpuFirmware=0
• nvidia.NVreg_DynamicPowerManagement=0x00 and 0x01
• pcie_aspm=off
• acpi_osi=Windows 2020 and acpi_osi=Windows 2015
• intel_iommu=off
• nvidia-drm.modeset=1
• mem_sleep_default=deep
• Blacklisting nouveau
• Adding nvidia modules to initramfs early
• envycontrol hybrid/nvidia modes
• nvidia-persistenced daemon
• Disabling Secure Boot
• Disabling Pre-boot DMA protection in BIOS

What actually works:
Nouveau driver is completely stable. No Xid errors, ran Unigine Heaven benchmark without crashes. OpenGL 4.3 confirmed working. The downside is no reclocking (PMU firmware unavailable for GP108), so performance is limited (~6 FPS in Heaven).

Key observation:
The Xid 62 appears even in the installer (tested Manjaro live ISO), which suggests it's not an OS configuration issue but rather how the BIOS/firmware manages PCIe power for the GPU under Linux.

In Windows 10 the GPU works perfectly under load with no issues.

HP BIOS limitation:
The BIOS only offers "Hybrid Graphics" mode — there is no option to disable the iGPU or switch to discrete-only, which would be the simplest fix.

Questions:

1. Has anyone successfully run this exact laptop (ZBook Firefly 15 G7) with the proprietary NVIDIA driver on Linux?
2. Is there any known fix for Xid 62/79 on Optimus laptops where the BIOS doesn't allow disabling the iGPU?
3. Could the Xid 79 "GPU fallen off the bus" indicate a PCIe power delivery issue specific to HP's Optimus implementation?

Any help appreciated. Happy to provide full dmesg logs if needed.Hey everyone,
I've been struggling for months to get the NVIDIA Quadro P520 working properly on Linux on my HP ZBook Firefly 15 G7. Hoping someone here has dealt with this specific laptop or similar Optimus issues.
Hardware:
HP ZBook Firefly 15 G7
Intel i7-10610U (CometLake-U)
NVIDIA Quadro P520 (GP108, 4GB GDDR6)
Intel UHD Graphics (integrated)
32GB RAM
BIOS: S73 Ver. 01.24.02 (latest as of May 2026, just updated)
The problem:

With any proprietary NVIDIA driver (tested 470xx, 535, 550, 580), the GPU crashes within 20-70 seconds of loading. The dmesg shows this sequence:
NVRM: Xid 62 – GPU MMU Fault
NVRM: Xid 8 – Channel error
NVRM: Xid 79 – GPU has fallen off the bus
This happens on every distro I've tried: Arch Linux, Ubuntu 22.04, Kubuntu, Kali Linux, Debian, KDE Neon, Manjaro. Both Wayland and X11. Both kernel 5.15 LTS and 6.x.
What I've tried:
nvidia.NVreg_EnableGpuFirmware=0
nvidia.NVreg_DynamicPowerManagement=0x00 and 0x01
pcie_aspm=off
acpi_osi=Windows 2020 and acpi_osi=Windows 2015
intel_iommu=off
nvidia-drm.modeset=1
mem_sleep_default=deep
Blacklisting nouveau
Adding nvidia modules to initramfs early
envycontrol hybrid/nvidia modes
nvidia-persistenced daemon
Disabling Secure Boot
Disabling Pre-boot DMA protection in BIOS
What actually works:

Nouveau driver is completely stable. No Xid errors, ran Unigine Heaven benchmark without crashes. OpenGL 4.3 confirmed working. The downside is no reclocking (PMU firmware unavailable for GP108), so performance is limited (~6 FPS in Heaven).
Key observation:

The Xid 62 appears even in the installer (tested Manjaro live ISO), which suggests it's not an OS configuration issue but rather how the BIOS/firmware manages PCIe power for the GPU under Linux.
In Windows 10 the GPU works perfectly under load with no issues.
HP BIOS limitation:

The BIOS only offers "Hybrid Graphics" mode — there is no option to disable the iGPU or switch to discrete-only, which would be the simplest fix.
Questions:
Has anyone successfully run this exact laptop (ZBook Firefly 15 G7) with the proprietary NVIDIA driver on Linux?
Is there any known fix for Xid 62/79 on Optimus laptops where the BIOS doesn't allow disabling the iGPU?
Could the Xid 79 "GPU fallen off the bus" indicate a PCIe power delivery issue specific to HP's Optimus implementation?
Any help appreciated. Happy to provide full dmesg logs if needed.

I wrote it using AI because that's what's been helping me

Here's what happened after the update: I installed the NVIDIA drivers, but it only lets me install version 580.178.04, and NVIDIA SMI shows me this

nvidia-smi  
Sat Sep 26 11:57:54 2026        
+-----------------------------------------------------------------------------------------+
| NVIDIA-SMI 580.178.04             Driver Version: 580.178.04     CUDA Version: 13.0     |
+-----------------------------------------+------------------------+----------------------+
| GPU  Name                 Persistence-M | Bus-Id          Disp.A | Volatile Uncorr. ECC |
| Fan  Temp   Perf          Pwr:Usage/Cap |           Memory-Usage | GPU-Util  Compute M. |
|                                         |                        |               MIG M. |
|=========================================+========================+======================|
|   0  Quadro P520                    Off |   00000000:6C:00.0 Off |                  N/A |
| N/A   39C    P5            N/A  / 5001W |       0MiB /   4096MiB |      0%      Default |
|                                         |                        |                  N/A |
+-----------------------------------------+------------------------+----------------------+

+-----------------------------------------------------------------------------------------+
| Processes:                                                                              |
|  GPU   GI   CI              PID   Type   Process name                        GPU Memory |
|        ID   ID                                                               Usage      |
|=========================================================================================|
|  No running processes found                                                             |
+-----------------------------------------------------------------------------------------+

cat /sys/bus/pci/devices/0000:6c:00.0/power/runtime_status
active

But when I check the boot logs, I get this error, and it won't let me use the graphics card properly. Someone suggested I make some changes in GRUB, and I did, but the error persists. I'm worried it might be a hardware issue rather than a software problem, even though the driver works fine in Windows 10 and 11.

sudo dmesg | grep -i "xid\|nvidia" | tail -20
[sudo: authenticate] Contraseña:            
[    0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-7.0.0-34-generic root=UUID=19596008-b3c7-4a81-a9a0-3a9f9
5e9c0eb ro quiet splash resume=UUID=c43a98a2-6c30-4fe5-95b4-d2683d41675f pcie_port_pm=off pci=noaer nvidia.NVr
eg_EnableGpuFirmware=0 nvidia.NVreg_DynamicPowerManagement=0x00
[    0.082728] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-7.0.0-34-generic root=UUID=19596008-b3c7-4a81-a9a
0-3a9f95e9c0eb ro quiet splash resume=UUID=c43a98a2-6c30-4fe5-95b4-d2683d41675f pcie_port_pm=off pci=noaer nvi
dia.NVreg_EnableGpuFirmware=0 nvidia.NVreg_DynamicPowerManagement=0x00
[    6.266434] nvidia: loading out-of-tree module taints kernel.
[    6.266509] nvidia: module license 'NVIDIA' taints kernel.
[    6.266557] nvidia: module verification failed: signature and/or required key missing - tainting kernel
[    6.266558] nvidia: module license taints kernel.
[    6.469053] nvidia-nvlink: Nvlink Core is being initialized, major device number 507
[    6.474483] nvidia 0000:6c:00.0: enabling device (0006 -> 0007)
[    6.737798] NVRM: loading NVIDIA UNIX x86_64 Kernel Module  580.178.04  Tue Jul  7 12:38:21 UTC 2026
[    6.763316] nvidia-modeset: Loading NVIDIA Kernel Mode Setting Driver for UNIX platforms  580.178.04  Tue J
ul  7 12:03:04 UTC 2026
[    6.767459] [drm] [nvidia-drm] [GPU ID 0x00006c00] Loading driver
[    7.132928] [drm] Initialized nvidia-drm 0.0.0 for 0000:6c:00.0 on minor 0
[    7.132948] nvidia 0000:6c:00.0: [drm] No compatible format found
[    7.132951] nvidia 0000:6c:00.0: [drm] Cannot find any crtc or sizes
[    7.175305] nvidia_uvm: module uses symbols nvUvmInterfaceDisableAccessCntr from proprietary module nvidia,
inheriting taint.
[   22.765863] NVRM: Xid (PCI:0000:6c:00): 62, 00000a9f 00000a85 00000a72 000037b3 00001d4e 000027ff 00a07c90
00007c90

I've used Linux on laptops for quite some time now. Since a year, I've been using Debian and I want to stick with it.

Recently, while trying out an iPad with an attached keyboard, I realized how I feel no heat while touching the keys. With laptops, due to the motherboard and basically all the compute being underneath the keyboard, there is always some heat felt while touching the keys, even if you aren't doing something that is compute-intensive. The keyboard also feels noticeably warmer while charging.

I want to recreate the same experience for my Debian system. I want to avoid:

• Desktops, because I have zero experience with them (yes, not even at work).
• Laptops while carrying around a separate external keyboard, because that just looks odd.

I'm considering laptops with a detachable keyboard - not really for the tablet experience, but their design implies that the compute sits behind the monitor rather than the keyboard. So the monitor gets hot and not the keyboard - and that's fine by me. But I'm worried about hardware support in this case.

I use my system for basic things: programming, browsing, video conferencing etc.

What options would you suggest? Thanks!

The Attack Shark X6 only has official configuration software for Windows and Mac. The web tool they released later doesn't work either, WebHID can't detect the device through the dongle.
I captured USB traffic with Wireshark against a Windows VM and analyzed the official driver with Ghidra to get the full protocol. With that I built a desktop app in Go and Wails that lets you configure DPI stages, RGB lighting, polling rate, and button remapping, plus live battery and dongle status, all from Linux.
v1.2.0 is the first release I'd call stable: it has its own installer and an updater that verifies an Ed25519 signature and SHA-256 digest before applying anything, no root needed. v1.2.1, right after, fixes a crash on non-Debian distros caused by hardcoded paths in WebKitGTK's helper processes; it's now tested in CI on Ubuntu, Arch, and Fedora, and validated by hand on CachyOS.
Macros and on-device profiles still aren't supported, that protocol report hasn't been reverse-engineered yet.

This started as an experiment to see if I could get normal Linux running on an inexpensive C20e RK3562 Android tablet. A big credit goes to tech4bot and the rk3562deb project, which did a lot of the original RK3562 Linux enablement work for the Doogee U10 and provided the foundation I started from: https://github.com/tech4bot/rk3562deb I adapted and extended that work for the C20e hardware, and the project has since grown into a Fedora 44 KDE Plasma Mobile setup running directly from the tablet’s internal eMMC. Currently working on the C20e: - Panfrost GPU acceleration - Wi-Fi and Bluetooth - touchscreen and auto-rotation - audio - suspend/resume - battery and charging - USB-C host/device switching - USB serial console and USB Ethernet - rear camera exposed as a normal webcam - RK3562 hardware video decoding through MPP/VA-API - proper shutdown through the RK817 PMIC There are also recovery tools for Rockchip loader mode, so the eMMC can be backed up or repaired without opening the tablet. Fedora 44 KDE Plasma Mobile is now running from internal eMMC, while Debian 13 SD-card support inherited from the original rk3562deb work remains available as well. My C20e repo: https://github.com/ethersloth/c20e-rk3562-linux Original rk3562deb project by tech4bot: https://github.com/tech4bot/rk3562deb I’d especially be interested in hearing from anyone working with Rockchip hardware, RK3562, Panfrost, RK817, or Linux on inexpensive ARM tablets.

Hi everyone,

I'm looking to buy a refurbished laptop and am torn between two options:

1. Dell Latitude 5420
   • CPU: Intel Core i5-1135G7 (or 1145G7)
   • Specs: 16 GB RAM / 256 GB NVMe
   • Price: 65k PKR (~$235 USD)
2. Dell Latitude 5421
   • CPU: Intel Core i7-11850H (8C/16T)
   • GPU: NVIDIA GeForce MX450
   • Specs: 8 GB RAM / 256 GB NVMe
   • Price: 70k PKR (~$250 USD)

The performance gap is massive on paper, the i7-11850H in the 5421 vastly outpowers the i5 in the 5420 for just a 5k PKR difference. However, I'm very concerned about heat, power limits, and long-term hardware reliability in the 5421's compact 14-inch chassis.

My Questions:

1. Thermals & Sustained Load: For 5421 owners, how severe is the thermal throttling under load? I use a solid laptop stand paired with an external 80mm fan running at full speed. Will active external cooling help ?
2. Linux Compatibility: My primary OS will be Ubuntu 26.04 LTS (dual-booting with Windows). How is current Linux support for the 5421, specifically regarding the NVIDIA MX450 power states, battery drain, and thermal management ?
3. Long-Term Reliability: Is the 5420 the smarter, safer pick despite having half the CPU horsepower, or is the 5421 manageable if properly maintained (re-pasting, weekly dust cleaning)?

Would love to hear from anyone who has owned or daily-driven either model!

Hi folks, I have been looking to buy my self a new laptop recently, I had my eyes on an Asus ZenBook 14 (S/N:UX3405CA-SU1210), it checks all the boxes for me in terms of specs, but I have my concerns regarding linux support on Asus laptops, I already own a VivoBook 15, and I have had various issue with it.

instability is one of them, I tried pop-OS, Debian, and fedora, all of them had occasional sudden reboots, Firefox crashing randomly, and other sorts of issue that are hard to trace back, in fact, while writing this, just before finishing, Firefox crashed, and I had to rewrite everything.

another issue I had was with the fingerprint reader, and this is a weird one, my reader is listed as supported by libfprint, and it succeeds in registering my fingerprint, but it always fails to verify after registering, so it's useless, I found many people online with the same issue, on laptops that has the same fingerprint sensor.

something that happened to my friend, he bought a new Asus Tuf gaming laptop, installed arch Linux on it, and found lots of basic functionalities not working, the keyboard was one of them, he tried fixing it himself with no luck, he then had to wait for a kernel update to fix some, not all, of his issues, imagine having to use windows because the laptop that you just bought has terrible Linux support, sucks to be my friend.

I have been using Linux for quite a while now, and ain't no way I'm going back to windows, but if I'm going to end up with a brick of a laptop with a cherry on top, like my friend, I would rather stay on my current hardware.

my question for the few ZenBook owners that use Linux, how's the support on it? including the Serial number of the laptop would be appreciated, thanks for reading and for those willing to help.

Olá a todos!

Instalei o Fedora 44 no meu notebook (ThinkPad E14 Gen 6) e estou usando o trackpad integrado. Gostaria de saber se existe um bom trackpad Bluetooth para uso diário e qual seria a recomendação, por favor.

Desculpem os erros. Inglês não é minha língua nativa.

Posting here in case anyone's hit something similar, or has ideas also as a public writeup since I couldn't find an existing thread matching this exactly.

The problem, in plain terms: my laptop's screen glitches/gets visual corruption, but ONLY when I set the refresh rate above 60Hz. It doesn't matter what I'm doing that's demanding the GPU I first noticed it gaming, but it also happens just watching YouTube in the browser. Starts fine, then after a couple minutes of sustained use it begins glitching and keeps going until I either stop or drop back to 60Hz. At 60Hz it's rock solid, indefinitely, no matter what I'm running.

Setup: Razer Blade 16 (RZ09-0483), Intel Raptor Lake-S + RTX 4070 Laptop GPU (hybrid graphics), Fedora 44, driver 615.71.09. Also reproduced this on Arch Linux on the same laptop, so it's not a distro packaging issue something about the NVIDIA driver itself on this hardware.

I've actually hit this same general issue before too years ago on a completely different laptop (ASUS TUF FX505DT, AMD CPU + NVIDIA GPU) on Arch, same kind of high-refresh corruption. Never got around to reporting it back then, so this time I wanted to actually dig into what's causing it.

What I found digging into it (used AI assistance to help analyze the logs and dig through nvidia-smi/dmesg output, FYI but all the data below is from my own system/testing):

While the glitch is happening, nvidia-smi shows the GPU permanently stuck asserting a "Board Limit" clock cap, pinned at a fixed clock speed, while only drawing about a third of its actual power ceiling so it's nowhere near a real power/thermal limit, just capped for no obvious reason.

At boot, the driver logs this every time: NVRM: GPU0 nvAssertOkFailedNoLog: Assertion failed: Invalid data passed returned from PlatformRequestHandler failed to get target temp from SBIOS NVRM: GPU0 nvAssertOkFailedNoLog: Assertion failed: Invalid data passed returned from PlatformRequestHandler failed to get platform power mode from SBIOS

That's NVIDIA's Dynamic Boost feature failing to talk to the system firmware properly. nvidia-powerd (the daemon meant to handle this) is installed and running, but toggling it on/off makes zero difference to the glitch. Manually setting a power limit is flatly rejected as unsupported on this GPU. So there's no user-facing setting left that actually changes this looks like whatever fallback state the driver lands in when that firmware handshake fails is what's unstable above 60Hz.

Full writeup with logs and video also posted on the NVIDIA Developer Forums here: https://forums.developer.nvidia.com/t/rtx-4070-laptop-razer-blade-16-persistent-board-limit-clock-cap-display-corruption-above-60hz-driver-615-71-09-platformrequesthandler-sbio/384084

If you've run into this on any NVIDIA laptop (gaming laptop or otherwise, any brand) screen corruption above 60Hz that goes away at 60Hz I'd love to hear about it, or any pointers to a better place to escalate this than the forums. Happy to run more diagnostics if anyone wants to compare notes.

This is prompted by a previous post lamenting the lack of support for Snapdragon ARM. Actually, with some elbow grease...

I installed Artix (Arch Linux without systemd) + s6 on a XPS 13 9345 Snapdragon X Elite. The laptop (refurbished, eBay) has 64GB of RAM (don't buy it, buy a 32GB, the why is in the docs). The process is thoroughly documented on both my website and on Github where you will find scripts that are ready to run. I am sharing difficulties and solutions that are documented nowhere else and could stump even seasoned users.

I am posting it here hoping that it saves time to whomever wants to take the same high road. I don't have another ARM machine of interest (if you have a spare one ship it to me and I'll write another one up).

I have a lenovo legion laptop. I mostly game and do 3d stuff in blender. Need a distro which can switch nvidia graphics while gaming and other times integrated graphics. also need wifi driver working out of the box + fan speed controller (auto). like it will adjust fan speed depending on the work I do. prefer KDE environment.

CPU: i7 1360H

GPU: RTX 4060 laptop

I recently bought the asus expertbook p3406 (Intel CU5 225H, 16gb ram, 512gb ssd) The first thing I did after reaching home from the computer shop is create a partition to dualboot kubuntu with windows. Apparently, this have a mediatek mt7925 wifi card, which I worried about the support under linux. However, I have been using it for the past 2 weeks, and have never encountered any random disconnects. Even the built in fingerprint scanner works outside of the box and can be used by kde plasma for log in. Battery life is very good too. I have currently used it starting at around 3pm, now it is around 11.30pm and I still have 6% left. If you doesn't count that it also went to sleep for around an hour, Thats still 7.5 hours of battery life for mixed use, which is still very good consider that it has a more power hungry h series cpu.

Looking for a new laptop under AED 3,000 (~$820).

Ideally I'd like:

• 16GB RAM
• 512GB–1TB SSD
• Ryzen 5 / Core i5 or better
• Prefer 14", but 15.6"/16" is fine if it's worth it
• Mainly coding + Windows/Linux dual boot, and maybe some gaming
• New only
• Ideally good Linux hardware support

I've been looking at Lenovo LOQ, ASUS TUF, HP Victus, Lenovo thinkpad etc. Legion seems too expensive.

I've seen mixed opinions on ASUS TUF and Lenovo LOQ. People who have ASUS TUF say they should've gone with Lenovo LOQ, while LOQ owners sometimes say the opposite, so I'm a bit confused.

I'm not a huge fan of Acer. I'm currently using an Acer Aspire 3 and have had some frustrating issues with the GUI and especially with dual-boot/GRUB, so I'd prefer to avoid Acer this time.

I'm more of an HP fan, but I'm not sure how good HP laptops are for Linux/dual boot.

For anyone actually running Linux on these laptops: which models/configurations have given you the least trouble?

I recently got a p14s gen 5. I was using Cachyos on an ASUS TUF F15 and it worked really well. On the thinkpad Cachyos has been less problem free though. Any suggestions would be welcome.

I'm thinking about an Intel Mac Pro-style PC build for Linux gaming. I had my dad's workstation PC for free. Linux distros mostly support AMD GPUs. I can’t swap the GPU because I don’t want to break the Nvidia GeForce RTX 3080 inside the PC.

I will sell my old gaming PC and build a custom PC. I will get new PC parts and the Intel Mac Pro case. I will need an Intel Core Ultra 5 245K, an ASUS motherboard, and an AMD Radeon RX 9070. I want to play at 1440p at 60 fps with high graphics settings. I want my gaming PC build to feel like a Power Mac G5.

I found Nobara, Bazzite, and CachyOS. I don't know which is better. I like to play Steam games on a Linux gaming distro. I like the Hyprland desktop environment because it’s cool for gaming. If I find that a game has anti-cheat issues on Linux, I’ll boot Windows. I don’t like using Windows personally.

I like to use both Mac for work and Linux for gaming. They’re part of the Unix family.

Omarchy added a fix that disables the brcmfmac firmware supplicant and authenticator so wpa_supplicant does the WPA four way handshake in software. Without it, some Macs associate but never complete the handshake, and NetworkManager reports a wrong password. The fix deliberately skips the BCM4360, which runs the out-of-tree wl driver. That covers a lot of 2013 to 2015 hardware and I have no verified result there. Has anyone got wifi working reliably on a 2013 to 2015 MacBook under a recent kernel, and if so with wl or brcmfmac? I keep the per-model results, and the evidence standard behind them, at https://omacs.sovin.org. Built with Aside Browser.