Public bug reported:
Release:
Description: Ubuntu 26.04 LTS
Release: 26.04
Package version:
linux-image-generic:
Installed: (none)
Candidate: 7.0.0-27.27
Version table:
7.0.0-27.27 500
500 http://id.archive.ubuntu.com/ubuntu resolute-updates/main amd64
Packages
500 http://security.ubuntu.com/ubuntu resolute-security/main amd64
Packages
7.0.0-14.14 500
500 http://id.archive.ubuntu.com/ubuntu resolute/main amd64 Packages
What I expected to happen:
USB-C PD charging should negotiate full wattage on any compliant charger,
matching the behavior of other laptops on the same power source.
What happened instead:
On a specific AC power source (tested at a cafe), USB-C charging on ASUS ProArt
PX13 fails to negotiate above the USB-C default fallback rate (15W / 5V-3A),
regardless of charger brand used (tested with both Kiip 100W and Anker 100W
chargers — same result on both).
For comparison, two other laptops (Lenovo Yoga, ASUS ROG Flow Z13)
charge normally at full rate on the exact same power source, using their
own respective chargers (Anker 100W and a 64W charger respectively).
At a different location (same building, different floor), the same
ProArt + Kiip 100W combination charges normally at full rate —
suggesting the ProArt's PD negotiation is less tolerant of marginal
power quality compared to the other devices tested, rather than a simple
charger/cable compatibility issue.
dmesg shows the following error at the time of the failed negotiation:
ucsi_acpi USBC000:00: GET_CURRENT_CAM command failed
Hardware: ASUS ProArt PX13 (HN7306WV)
BIOS version: HN7306WV.316 (confirmed latest available from ASUS support site
as of testing)
Kernel: 7.0.0-27-generic
dGPU: disabled (via prime-select intel) at time of testing
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-7.0.0-27-generic 7.0.0-27.27
ProcVersionSignature: Ubuntu 7.0.0-27.27-generic 7.0.6
Uname: Linux 7.0.0-27-generic x86_64
ApportVersion: 2.34.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sun Jul 12 15:44:09 2026
InstallationDate: Installed on 2026-05-22 (51 days ago)
InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1)
MachineType: ASUSTeK COMPUTER INC. ProArt PX13 HN7306WV_HN7306WV
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-27-generic
root=UUID=092e632f-6509-4603-95f7-c4038dc8f1a3 ro quiet splash
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/18/2025
dmi.bios.release: 5.35
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: HN7306WV.316
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: HN7306WV
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 31
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.ec.firmware.release: 3.25
dmi.modalias:
dmi:bvnAmericanMegatrendsInternational,LLC.:bvrHN7306WV.316:bd03/18/2025:br5.35:efr3.25:svnASUSTeKCOMPUTERINC.:pnProArtPX13HN7306WV_HN7306WV:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnHN7306WV:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct31:cvr1.0:sku:pfaProArtPX13:
dmi.product.family: ProArt PX13
dmi.product.name: ProArt PX13 HN7306WV_HN7306WV
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
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https://bugs.launchpad.net/bugs/2160441
Title:
USB-C PD negotiation fails to marginal-quality power sources on ASUS
ProArt PX13 (HN7306WV) - ucsi_acpi GET_CURRENT_CAM failure, other
laptops unaffected on same power source
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