Samsung Galaxy Book4 Edge 15" (NP750XQA, X1P42100) — hardware status and one question

[BuZain1]

I run Omarchy as my daily system on a Samsung Galaxy Book4 Edge 15" (NP750XQA, Snapdragon X Plus X1P42100). The model isn't on the Snapdragon list, so here is where it stands. I'd also like to ask how you'd want its device tree delivered.

The machine

• DMI: SAMSUNG ELECTRONICS CO., LTD. / Galaxy Book4 Edge / board NP750XQA-KB2US
• Device tree compatible: samsung,galaxy-book4-edge-15, samsung,galaxy-book4-edge, qcom,x1p42100
• Windows stays on the disk: the firmware comes from its partition.

Where the device tree comes from

Mainline has no Book4 Edge device tree. The 14" and 16" series (v8, posted 2026-09-30) covers the X1E models only and has had no follow-up I can find. The 15" has never been posted to the list.

The 15" tree I run is Antheas Kapenekakis's, from anatase-org/patchwork (branch anatase-7.2), built on the shared Book4 Edge work by Kirill Korinsky and Valentin Manea. That tree targets the sister SKU, the NP750XQB. My own work is the delta for the NP750XQA, which I've filed with Antheas as kernel-anatase#8.

What works

Kernel 7.2.7-anatase plus the NP750XQA fixes below. This is not Omarchy's kernel; see "Not tested yet".

Feature	Works?	Notes
Display, keyboard, function keys	✅	Brightness, volume, mute, Copilot key. There is no keyboard backlight on the 15".
Touchpad	✅	Mine is a Zinitix at 0x40. Four touchpad vendors ship in this chassis, so the node has to be probe-based.
GPU (Adreno X1-45)	✅	OpenGL and Vulkan. I found a boot-time oops in a6xx_gmu_set_freq() and I'm sending a fix to the msm maintainers.
Video decode (Iris)	✅	H.264, HEVC, VP9 and AV1, with Samsung's signed qcvss8380_pa.mbn from Windows.
Camera (OV02C10)	✅	The tree lacks the camera; I added the CAMSS, CCI0 and sensor nodes as one of my NP750XQA patches.
Speakers and microphone	✅	WSA883x. Uses the CRD sound model for the topology file (local workaround).
Wi-Fi, Bluetooth audio	✅	WCN7850.
Charging	✅	Through Anatase's samsung-emuec driver.
HDMI	✅
Lid, s2idle and deep sleep	✅	s2idle resume is intermittent; see below.
Battery life	✅	About 10.5 h at light use (about 5.5 W).
USB-C dock video	⚠️	Only if the dock is attached at boot. One screen per port, no MST.
Dock charging	⚠️	Charges only if plugged in at boot.
s2idle resume	⚠️	Sometimes never resumes: the UFS PHY times out at suspend entry.
Bluetooth calls (HFP)	❌	WCN7850 crash-loops on call audio.
Fingerprint	❌	The reader is not in the device tree.

I'm reporting the dock, UFS and HFP problems upstream (Anatase for the dock, linux-arm-msm/linux-scsi for UFS, linux-bluetooth for HFP), and I'll link the reports here.

Not tested yet

• Omarchy's own linux-omarchy kernel. It has no tree for this model, so it can't boot it as-is.
• The stock Dragon ISO. I'll boot it with the tree loaded by hand, then do a full install, once I know which way you want the tree to come in.

The question

Would you carry the Book4 Edge 15" device tree in linux-omarchy-aarch64 before it reaches mainline, the way omarchy-pkgs #975 carries the Surface Pro 11's tree? If yes, I'd open an omarchy-pkgs PR modelled on #955 (the Snapdragon device-tree PR): Antheas's 15" DTS with its authorship kept, my NP750XQA fixes as separate patches, and a test report. After that comes a board script on quattro. If you'd rather it go through mainline first, I'll put my effort there and keep this thread as the testing page.

AI disclosure: I worked on these fixes and on this write-up with Claude (Claude Code). I tested every result above on the machine myself.

Mohammed AlHashim

[hegjon]

I have a Galaxy Book4 Edge, 14-inch (model NP944XMA, a variant of the NP940XMA) that would be great to get working.

[birkskyum]

Thanks, this is the kind of report that makes a board easy to take in.

An omarchy-pkgs PR modelled on omacom/omarchy-pkgs#975 is the way in, with one change of base. Omarchy's ARM kernel is moving to Linux 7.3 in omacom/omarchy-pkgs#1417, which is in testing now, so build the PR against that recipe instead of 7.2.8. Neither 7.3 nor linux-next has a Book4 Edge tree, so the tree comes in as patches either way. Name the file x1p42100-…, and the package installs it with the other X1 trees.

To make it easy to review and to drop later, post the 15" tree to linux-arm-msm and carry exactly what you posted, with Antheas's authorship kept and your NP750XQA fixes as separate patches. Keep the PR to device-tree patches. samsung-emuec is a driver of its own, so list which features need it and send it as a separate PR. Test with #1417's CI build plus your DTB from the same sources, post the results here, and the board script on quattro follows like #14390.

@hegjon the 14" and 16" X1E models depend on the v8 series from 30 September, which isn't in 7.3 or linux-next either. Testing that series on 7.3 and replying on the list with a Tested-by is what moves it.

[hegjon]

@birkskyum Thanks. I tested the v8 series (patches 1 and 3) on 7.3 on the 14" (NP944XMA), using #1417's CI build (linux-omarchy-7.3-1). The dtb was built from the same 7.3 sources plus #1417's patches, and GRUB loaded it from a modified 4.5.0rc1 live ISO.

It boots to the live session with no failed units.

	Result
Keyboard, touchpad, touchscreen	Works
USB-C, both ports, host mode (Ethernet adapter, USB stick)	Works with devices plugged in at power-on; hotplug not tested
UFS	Works
Display	simpledrm only; msm still blacklisted
Wi-Fi (WCN7850, 17cb:1107)	Probes; no board data for board-id 255
Battery, sound, Type-C events	Waiting on ADSP; no firmware yet
Camera	Not tested
EFI variables	Empty: the CI kernel doesn't have v8 patch 2 (QSEECOM)

I haven't replied on the list yet. What should I test before I do? Is a Tested-by for patches 1 and 3 covering what works above useful as it is? Or should I first get ADSP/CDSP, msm and Wi-Fi going, and build a 7.3 kernel with patch 2 so QSEECOM is covered too?

[hegjon]

Update on the 14" (NP944XMA): Omarchy 4.5.0rc1 now installs and runs as a daily desktop on it, with linux-omarchy 7.3 (omacom/omarchy-pkgs#1417) and the v8 Book4 Edge series. Everything is in https://github.com/hegjon/omarchy-galaxy-book4-edge.

• gb4e/ is a samsung-galaxy-book4-edge-14 package: the device tree, boot and initramfs settings, Wi-Fi board file, sound, keyboard, Bluetooth, the fan and USB-C services, and three out-of-tree modules (EC battery, ov02c10 with the module's 26 MHz clock, speaker volume caps).
• iso/build.sh turns the stock 4.5.0rc1 aarch64 ISO into one that boots on this machine. Its installer installs that package and a firmware package made from your own Windows files, so a normal install comes up working. The firmware itself isn't in the repository.

	Status
Display, GPU (freedreno), backlight, keyboard, touchpad, touchscreen	Works
Wi-Fi, Bluetooth, 4 speakers, microphones, camera, battery, fan	Works
EFI variables, installer boot entry, RTC	Works
USB-C hotplug of devices and chargers (20 V PD), both ports	Works
USB SuperSpeed	In progress: the v8 tree has no PS8830 retimers; with them added and the orientation set, a USB Ethernet adapter runs at 5 Gbit/s
DP alt mode, suspend	Missing / untested

Findings that matter for the v8 series and for stock Omarchy are in the README. In short:

• The speaker amps are WSA883x, not WSA884x as the v8 tree says.
• efivars need v8 patch 2/3 (QSEECOM); qcom,x1e80100-qcp in the root compatible is the stopgap.
• USB-C on this machine runs through Samsung S2MM006 PD controllers (EmuEc.sys on Windows), not pmic-glink. The 15" work in ciscobugger/book4-edge-linux has the register map.
• usbcore.autosuspend=-1 has to be on the kernel command line, since usbcore is built into linux-omarchy.