Limitations

Module	Source	Description	Customer Impact	Workaround
Power	Software	Suspend/resume failure on Vision Kit (through USB) https://github.com/qualcomm-linux/kernel/issues/1298	Suspend/Resume failure break core power management, posing a release blocker due to system instability and loss of low-power functionality	Limitation in this Release
Audio	Software	wpctl reports a dummy audio sink, affecting audio encode/decode functionality https://github.com/alsa-project/alsa-ucm-conf/issues/884	Audio encode and decode functionalities impacted	Limitation in this Release
Camera	Software	Camera open/close KPI latency is inconsistent https://github.com/qualcomm-linux/camera-driver/issues/13	Inconsistent performance and frame drops observed.	Limitation in this Release
Performance	Software	Observing Graphics not rendering properly on Display, the latencies observed wont be valid as device unable to render graphics properly on display	Graphics are not rendered correctly on the display for QCM6490 and QCS615, making RT graphics-latency measurements invalid and blocking reliable performance KPI validation.	Limitation in this Release
Audio	Software	PipeWire delays device shutdown by more than 10 seconds https://github.com/AudioReach/audioreach-pipewire-plugin/issues/43	High shutdown time	Limitation in this Release
Display	Software	4K HDMI output negotiates a non-standard resolution instead of the supported 4K mode on Kodiak/RB3, affecting external-display validation https://github.com/qualcomm-linux/kernel/issues/1294	4K display functionality is blocked as the system negotiates a non-standard resolution instead of the PoR-supported 4K mode, impacting external display user experience and HDMI 4K validation.	Limitation in this Release
Performance	Software	Cyclic-test latency exceeds the required 20 µs limit during NoLoad and StressNG testing.	Impact RT latencies , latencies beyond 20usec	Limitation in this Release
Ethernet	Software	After the Renesas USB firmware push on to the device , the Ethernet controller and USB hub do not fully enumerate; the RJ45 port and two USB Type-A ports become unavailable.	Unable to use ethernet from RJ45 port and two type-A USB ports due to this.	Limitation in this Release
Boot	Software	Device reboots instead of powering off when the shutdown command is issued https://github.com/qualcomm-linux/kernel/issues/1301		Limitation in this Release
Kernel	Software	CDSP remoteproc remains offline	DSP/Compute - CDSP Remoteproc Boot and DSP Service Initialization	Limitation in this Release
PCIe	Software	Indu Mezz device fails to enter Fastboot or EDL mode after executing the reboot bootloader or reboot edl commands	Blocks device recovery, flashing and validation	Limitation in this Release
Camera	Software	Pink color corruption observed in preview and encoded files for the 3-exposure sHDR	Image quality issues effecting usability	Limitation in this Release

Module	Source	Description	Customer Impact	Workaround
Audio	Software	wpctl reports a dummy audio sink, affecting audio encode/decode functionality https://github.com/alsa-project/alsa-ucm-conf/issues/884	Audio encode and decode functionalities impacted	Limitation in this Release
Camera	Software	Camera open/close KPI latency is inconsistent https://github.com/qualcomm-linux/camera-driver/issues/13	Inconsistent performance and frame drops observed.	Limitation in this Release
Buses	Software	SD-card fallback boot fails when the UFS root filesystem or EFI image is erased or corrupted https://github.com/qualcomm-linux/meta-qcom/issues/3278	in case of any rootfs or efi images corrupcted or erased on ufs as boot medium , device will not Boot from sdcard as backup by mounting these rootfs and efi images on sdcards	Limitation in this Release
Security	Software	Observing ~1.5 sec Core UEFI boot time regression https://github.com/qualcomm-linux/meta-qcom/issues/3362	Boot time regression ~2 sec	Limitation in this Release
Storage	Software	RAID controller cannot be detected https://github.com/qualcomm-linux/kernel/issues/1300		Limitation in this Release
Audio	Software	PipeWire delays device shutdown by more than 10 seconds https://github.com/AudioReach/audioreach-pipewire-plugin/issues/43	High shutdown time	Limitation in this Release
Graphics	Software	Buffer drops occur during 32× 1080p video decode on Lemans, causing FPS drops and a laggy display.	observing fps drop in 32x1080 session, screen becoming laggy in decode session	Limitation in this Release
Security	Software	Devices crashes after eMMC flashing https://github.com/qualcomm-linux/meta-qcom/issues/3363	eMMC flashing causes the QCS9100 device to crash, preventing successful boot and impacting further device validation.	Limitation in this Release
Power	Software	System Crash observed during ‘systemctl suspend’ with U-Boot builds https://github.com/qualcomm-linux/kernel/issues/1299	Impacting suspend resume testcase	Limitation in this Release
OpenGLES	Software	Device gets stuck while executing Reboot Bootloader test.	Reboot Bootloader test cases impacted	Limitation in this Release
RTSS	Software	RTSS BSP Mailbox Kernel and userspace SW enablement. Git hub issue: https://github.com/qualcomm-linux/meta-qcom/issues/3085	RTSS communication , RTSS OTA, RTSS ping-pong functionalities impacted.	Limitation in this Release
RTSS Socket VCAN	Software	Support for Socket CAN utilities is enabled using a user-space CAN application. Git hub issue: https://github.com/qualcomm-linux/meta-qcom/issues/3123	CAN end-to-end feature enablement for socketCAN support is impacted.	Limitation in this Release
PCIe	Software	Observed Intermittent PCIe1 Enumeration Failure with NVMe	The intermittent NVMe detection failure causes the storage device to be unavailable after reboot	Limitation in this Release

Module	Source	Description	Customer Impact	Workaround
Boot	Software	Secure device bootup got stuck	Secure device fails to boot	Limitation in this Release
DSP Services	Software	Fastrpc handle open getting stuck https://github.com/qualcomm/fastrpc/issues/351	Fastrpc handle open gets stuck	Limitation in this Release
Performance	Software	FPS drops are observed during the four-Bayer concurrent camera use case https://github.com/qualcomm-linux/camera-driver/issues/13	Frame drops observed in 4 camera concurrent use cases, poor user experience.	Limitation in this Release
Camera	Software	Camera open/close KPI latency is inconsistent https://github.com/qualcomm-linux/camera-driver/issues/13	Inconsistent performance and frame drops observed.	Limitation in this Release
Security	Software	Observing ~1.5 sec Core UEFI boot time regression https://github.com/qualcomm-linux/meta-qcom/issues/3362	Boot time regression ~2 sec	Limitation in this Release
Storage	Software	RAID controller cannot be detected https://github.com/qualcomm-linux/kernel/issues/1300		Limitation in this Release
Audio	Software	PipeWire delays device shutdown by more than 10 seconds https://github.com/AudioReach/audioreach-pipewire-plugin/issues/43	High shutdown time	Limitation in this Release
PCIe	Software	Device wakes before the configured 30-second RTC wake-up interval, resulting in premature resume behavior.	Device wakes up before the configured 30-second RTC interval, resulting in premature resume behavior	Limitation in this Release
Display	Software	During eDP0 + eDP1 4K concurrent display testing on RB4, Weston comes up on only one display https://github.com/qualcomm-linux/kernel/issues/1295		Limitation in this Release
Storage	Software	SD-card detection fails on the latest Monaco QLI build, preventing use of the SD card as storage https://github.com/qualcomm-linux/kernel/issues/1302		Limitation in this Release
RTSS	Software	RTSS BSP Mailbox Kernel and userspace SW enablement. Git hub issue: https://github.com/qualcomm-linux/meta-qcom/issues/3085	RTSS communication , RTSS OTA, RTSS ping-pong functionalities impacted.	Limitation in this Release
RTSS Socket VCAN	Software	Support for Socket CAN utilities is enabled using a user-space CAN application. Git hub issue: https://github.com/qualcomm-linux/meta-qcom/issues/3123	CAN end-to-end feature enablement for socketCAN support is impacted.	Limitation in this Release
PCIe	Software	Persistent correctable PCIe AER errors observed with the default NVMe extender	Correctable PCIe AER errors may cause PCIe link instability, leading to intermittent NVMe access failures	Limitation in this Release

Module	Source	Description	Customer Impact	Workaround
Audio	Software	wpctl reports a dummy audio sink, affecting audio encode/decode functionality https://github.com/alsa-project/alsa-ucm-conf/issues/884	Audio encode and decode functionalities impacted	Limitation in this Release
Camera	Software	Camera open/close KPI latency is inconsistent https://github.com/qualcomm-linux/camera-driver/issues/13	Inconsistent performance and frame drops observed.	Limitation in this Release
Performance	Software	Observing Graphics not rendering properly on Display, the latencies observed wont be valid as device unable to render graphics properly on display	Graphics are not rendered correctly on the display for QCM6490 and QCS615, making RT graphics-latency measurements invalid and blocking reliable performance KPI validation.	Limitation in this Release
Camera	Software	IMX577 camera video is shaking and appears unstable in the linear video use case https://github.com/qualcomm-linux/camera-driver/issues/14	Video is unstable	Limitation in this Release
Camera	Software	Talos 3F10 GMSL YUV camera sensor reports an unrecoverable camera-device error while streaming, blocking related use cases https://github.com/qualcomm-linux/camera-driver/issues/15	getting “Camera device encountered an un-recovarable error” while streaming the 3F10 GMSL YUV sensor, all cases related to 3F10 YUV use cases are blocked	Limitation in this Release
Audio	Software	PipeWire delays device shutdown by more than 10 seconds https://github.com/AudioReach/audioreach-pipewire-plugin/issues/43	High shutdown time	Limitation in this Release
Performance	Software	Docker startup time increases by approximately 400–500 ms	Docker startup time increases by approximately 400–500 ms	Limitation in this Release
Kernel	Software	EVK secure devices fail to boot	Secure device fails to boot	Limitation in this Release

Module	Source	Description	Customer Impact	What’s Required
PCIe/Power	Software	Power suspend/resume test fails and the device freezes after suspend.	System freeze prevents reliable low-power operation and affects suspend/resume functionality.	Limitation in this release
Camera tuning	Software	Lens shading correction fails due to a Tintless algorithm failure.	Incorrect illumination and color compensation degrade image quality and camera user experience.	Limitation in this release
KVM	Software	`/dev/kvm` device node is missing on the EVK.	KVM-based hardware virtualization and virtual-machine use cases aren’t enabled.	Limitation in this release
Audio	Software	No audio is captured during recording with a 3.5 mm headset.	Headset-based audio capture and recording use cases are impacted.	Limitation in this release
Camera	Software	FPS drops are observed for IMX577 and concurrent camera use cases due to runnables on camera threads.	Video smoothness, camera performance, and quality are degraded, especially for IMX577 and concurrent use cases.	Limitation in this release
Sensors	Software	Sensors Island entry fails on IQX7181/IQX5121.	The platform may not enter the intended low-power state, potentially increasing idle or suspend power consumption.	Limitation in this release
Camera tuning	Software	Snapshots are underexposed.	Image brightness and overall snapshot quality are degraded, negatively affecting the camera user experience.	Limitation in this release
Display	Software	USB0 and DisplayPort over Type-C aren’t functional.	Display connectivity through the affected USB0/DP Type-C interface is unavailable.	Limitation in this release
Camera	Software	FPS drops of approximately 6 fps are observed for all preview and encode use cases using `libcamera` with GStreamer.	Preview and encode performance are degraded, affecting camera smoothness and associated use cases.	Limitation in this release

Module	Source	Description	Customer Impact	What’s Required
PCIe/Power	Software	Power suspend/resume test fails and the device freezes after suspend.	System freeze prevents reliable low-power operation and affects suspend/resume functionality.	Limitation in this release
Camera	Software	GStreamer camera streams remain stuck at NewSystemClock for IMX688 and OG sensors.	Camera streaming does not start, blocking camera functionality and related camera test cases.	Limitation in this release
Audio	Software	No audio is captured during recording with a 3.5 mm headset.	Headset-based audio capture and recording use cases are impacted.	Limitation in this release
KVM	Software	`/dev/kvm` device node is missing on the EVK.	KVM-based hardware virtualization and virtual-machine use cases are not enabled.	Limitation in this release
Camera	Software	FPS drops are observed for IMX577 and concurrent camera use cases due to runnables on camera threads.	Video smoothness, camera performance, and quality are degraded, especially for IMX577 and concurrent use cases.	Limitation in this release
Sensors	Software	Sensors Island entry fails on IQX7181/IQX5121.	The platform may not enter the intended low-power state, potentially increasing idle or suspend power consumption.	Limitation in this release

Module	Source	Description	Customer Impact	Workaround
Audio	Software	Enable headset playback and capture on CQS .	Enable headset playback and capture will not work on CQM	Limitation in this Release
Audio	Software	[U-Boot] Wpctl status showing dummy output	Audio routing wont happen through speakers	Limitation in this Release
Camera_Linux	Software	Observing fps drop in lib camera use cases with driver level cmds.	Impacts in fps drop went to 15 in 1080p 30 frames capture use case.	Limitation in this Release
Connected Camera	Software	Observing intermittent camera stream freeze for gst-transform-example app.	observing intermittent camera stream freeze issue.	Limitation in this Release
Core	Software	Observing a crash while enabling modemproc	Model PIL will not up in CQM	It is limitation in this release, pick following PR to fix the issue : https://github.com/qualcomm-linux/kernel/pull/1229
Data HLOS - LNX	Software	Observing 21mW power consumption from VDDIO_ETH rails in RBSC	Observing higher power during Etherne usecase	Limitation in this Release
Data HLOS - LNX	Software	IP Address Not Assigning After Changing to NCM Composition	IP Address not Assigning After Changing to NCM Composition	Limitation in this Release
DDR	Software	Device is not booting post RT Build flashing and device remains in EDL mode	Device will not boot up	Limitation in this Release
DSP Services	Software	CDSP fastrpc session creation failed .	Impacts on benchmarks	Limitation in this Release
Graphics_Linux	Software	Observing corruption during execution of Glmark2	Seeing corruptions in the Display	Limitation in this Release
Graphics_Linux	Software	CX running at TURBO corner in 1080p video decode usecase	Video use case consumes higher power	Limitation in this Release
IOT	Software	Crypto clock voting CX to run at NOM corner in idle display use case	Display ON use case consumes higher power	Limitation in this Release
Kernel	Software	Coresight failures on shikra IQS on 6.18-y	Observing unwanted logging in serial logs	Limitation in this Release
Kernel	Software	In Uboot mode Observing Custom reboots are failing	Device will not go to EDL , Not reboot and Shutdown	Limitation in this Release
Kernel	Software	Observing panic (caller 0x9f402c88): die log during shikra rebooting	Device will crash during reboot	Limitation in this Release
PCIe	Software	Bandwidth vote by PCIe on multiple interconnect nodes in idle display use case	Display ON use case consumes higher power	Limitation in this Release
SoC Infrastructure	Software	Boot up log in the cpufreq-dt driver which is not related to Qualcomm SoCs.	Observing unwanted logging in serial logs	Limitation in this Release
UEFI	Software	Systemd-analyze not printing firmware , loader times	impacts on boot time from power-on	Limitation in this Release
WiredConnectivity	Software	SuperSpeed Peripheral are enumerating as High Speed in CC2 orientation on USB0	SuperSpeed peripheral is getting only High-Speed (HS) in one orientation.	Limitation in this Release
WiredConnectivity	Software	Peripherals are not enumerating after suspend and resume on USB1 and DC Hub ports	Not able to see any peripherals	Limitation in this Release
Yocto	Software	Device is going to offline during USB cable connect/disconnect events	Device is going to offline during USB cable connect/disconnect	Limitation in this Release
Yocto	Software	Ostree: command not found in shikra Uboot build .	OTA will not work on Uboot build	Limitation in this Release
Display	Software	LVDS display isnt coming up	LVDS panel display will not coming up	It is limitation in this release, pick following PR to fix the issue : https://github.com/qualcomm-linux/kernel/pull/1241
Kernel	Software	Secure device boot up failure during UEFI-Linux Handoff	Boot up Failure on Secure device	It is limitation in this release, pick following PR to fix the issue :https://github.com/qualcomm-linux/kernel/pull/1254
Linux-eMMC	Software	SFS failures on nonsecure device	Observing SFS and PKC Failures in Enforcing mode in eMMC	It is limitation in this release, pick following PR to fix the issue :https://github.com/qualcomm-linux/meta-qcom/pull/3270
Kernel	Software	Enable dTPM	Enable the SPI controller and add the TPM node with the ST33HTPM compatible and a 20 MHz max clock.	It is limitation in this release, pick following PR to fix the issue :https://github.com/qualcomm-linux/kernel/pull/1182

Introduction

Architecture

Key Documents

Technologies

System

Release Notes