Intel NPU - wrong/missing values #622
Description
Is there an existing issue for this?
- I searched the existing issues and did not find anything similar.
Current Behavior
On a Lunar Lake laptop (Intel NPU) the NPU page in Resources shows NPU Frequency and Link as N/A, but the kernel exposes related sysfs nodes under /sys/class/accel/accel0/device. Total usage calculation also seems to be off.
Device / driver
$ readlink -f /sys/class/accel/accel0/device/driver
/sys/bus/pci/drivers/intel_vpu
$ cat /sys/class/accel/accel0/device/uevent
DRIVER=intel_vpu
PCI_CLASS=120000
PCI_ID=8086:643E
PCI_SUBSYS_ID=17AA:2339
PCI_SLOT_NAME=0000:00:0b.0
MODALIAS=pci:v00008086d0000643Esv000017AAsd00002339bc12sc00i00
Frequency sysfs
ACCEL=/sys/class/accel/accel0/device
$ cat $ACCEL/npu_max_frequency_mhz
1900
$ cat $ACCEL/npu_current_frequency_mhz
0
Power related
$ cat $ACCEL/power_state
D3hot
$ cat $ACCEL/power/runtime_status
suspended
Counters present
$ cat $ACCEL/npu_busy_time_us
979473
$ cat $ACCEL/npu_memory_utilization
68714496
Link-related sysfs exists but probably irrelevant
for f in current_link_speed current_link_width max_link_speed max_link_width; do
echo "== $f =="; cat "$ACCEL/$f"
done
== current_link_speed ==
Unknown
== current_link_width ==
0
== max_link_speed ==
Unknown
== max_link_width ==
255
Expected Behavior
No response
Steps to Reproduce
No response
Debug Logs
Expand logs
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Environment
Anything Else?
No response