Bug 795
| Summary: | hiddev is loosing events (getting 0x0 events instead of the real ones) | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Arnaud Quette (arnaud.quette) |
| Component: | Input Devices | Assignee: | Vojtech Pavlik (vojtech) |
| Status: | RESOLVED CODE_FIX | ||
| Severity: | high | ||
| Priority: | P2 | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Kernel Version: | 2.5.69+ | Subsystem: | |
| Regression: | --- | Bisected commit-id: | |
Does this still happen with 2.6.2[-rc3]? |
Distribution: Debian Unstable (sid) Hardware Environment: Celeron i810 board, uhci/ohci controlers, various MGE UPSs Software Environment: kernel + Network UPS Tools (hidups driver Problem Description: some hid events are lost. In fact, userland layer only see a 0x0 event ! This seems better between 2.5.69 and 2.5.70-bk13, as on the former I was losing all important events (ACPresent = 0, ...), while the later only lose it sometimes. Steps to reproduce: having the kernel with hiddev compiled in, start NUT hidups driver in debug mode (-DD) and unplug the power from the UPS to generate some interrupt events. You should see some: >Unhandled event: 0x0 (%value) With a bit of "chance", one of this event should be an "important" and visible one, such as the power failure (ACPresent = 0), thus you won't see that you're now on battery. Loosing a LowBattery would result in UPS to shutoff without the protected system to have shutdown. Lastly, note that this is 2.5 related (I've never seen 0x0 events in 2.4)