| Summary: | touchpad usability degrades with time. | ||||||
|---|---|---|---|---|---|---|---|
| Product: | xorg | Reporter: | Tony <tony.bowler72> | ||||
| Component: | Input/libinput | Assignee: | Peter Hutterer <peter.hutterer> | ||||
| Status: | RESOLVED NOTABUG | QA Contact: | Xorg Project Team <xorg-team> | ||||
| Severity: | normal | ||||||
| Priority: | medium | CC: | peter.hutterer, ryan.jentzsch | ||||
| Version: | unspecified | ||||||
| Hardware: | x86-64 (AMD64) | ||||||
| OS: | Linux (All) | ||||||
| Whiteboard: | |||||||
| i915 platform: | i915 features: | ||||||
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does the touchpad reset when you just restart X? if so then it's likely a libinput problem, otherwise it's probably a hardware issue. you can grab the libinput repo from http://cgit.freedesktop.org/wayland/libinput/ and build it (./autogen.sh && make). Make sure you have gtk+-devel installed to build ./tools/event-gui and run that as root. This shows how libinput interprets the events coming from the kernel. But it's a new libinput instance so when your touchpad degrades and you run the event-gui and that behaves normally, then again this would indicate a hw issue No response for many moons, closing Please reopen. I'm having this issue. I built libinput from source and ran the event-gui as root but the touchpad still becomes more and more unpredictable, jittery and eventually I have to issue: `sudo modprobe -r psmouse` and use my laptop touchscreen or reboot. The touchpad goes stupid usually after an increase in CPU cycles -- I know this because when I hear my laptop fan kick on almost immediately the touchpad starts acting up. Here's my info: Linux Mint 18.1 running on HP Envy 4-core `/proc/bus/input/devices/` I: Bus=0011 Vendor=0002 Product=0001 Version=0000 N: Name="PS/2 Synaptics TouchPad" P: Phys=isa0060/serio1/input0 S: Sysfs=/devices/platform/i8042/serio1/input/input181 U: Uniq= H: Handlers=mouse0 event6 B: PROP=1 B: EV=7 B: KEY=70000 0 0 0 0 B: REL=3 `dmsg` after `modprobe -r psmouse && modprobe psmouse` psmouse serio1: synaptics: Touchpad model: 1, fw: 8.1, id: 0x1e2b1, caps: 0xd00123/0x840300/0x12e800/0x0, board id: 2960, fw id: 1619168 [ 20.564628] input: SynPS/2 Synaptics TouchPad as /devices/platform/i8042/serio1/input/input5 modprobe removes the kernel module and resets the touchpad, the question is whether just restarting X/Wayland is sufficient. If so, that would indicate a userspace issue, right now, I suspect it's a kernel issue. I booted up with LM 18 via USB thumb drive to see if I had the same issue (at first it didn't appear so) then I decided to create a new LM boot partition as soon as the laptop fan kicked on the mousepad became erratic. I have a number of kernels I've tried and all have the same issue. I even built 4.9 from source with some custom configs to see if I could get this worked out. I think this may be a hardware issue. My next step is to take my laptop apart and make sure all connections are solid (unless you have a different suggestion). Thanks for taking the time to look into this issue. It's gotten to the point that the modprobe reset solution no longer works or works for a very short time. yeah, if the module removal changes or stops working that does suggest that there's a hardware issue involved. You could try with the battery removed or only on battery, with the battery fully charged etc. Sometimes electrical interference can cause similar issues. Other than that I don't have any good suggestions, sorry. But for now, I'll close this bug again, it does look like a hw issue. Sorry for my lack of response on this. Yes Peter the touch pad issue did reset after restarting X, but further to this i noticed that I didn't actually have to restart X but just drop out to a TTY then back in to the Desk top environment ant the touch pad jitters went away. Strange thing is that a short while after this bug seemed to go away by its self. I haven had the problem in ages. It could possibly be the result of one of many other issues that I had to iron out when setting up my laptop. When I read Ryans comment about noticing a correlation between his fan speed and the touch pad jitters it got me wondering if it could have something to do with C-states. Forgive me if I am way off track (Im way over my head here) but the reason I mention it is that one of the fixes I had to do to my laptop after moving to ubuntu was to use kernel boot parameter:intel_idle.max_cstate=1. This was to fix a freezing problem that only happened when playing videos. I think the GPU or CPU uses more power when needed and this was causing the whole computer to completely freeze. the only way to recover was a total hard reboot. But after using the kernel boot parameter intel_idle.max_cstate=1 it stopped happening. And now im wondering if that is what fixed the erratic touch pad behavior. Again sorry if im way off track here I really have no idea what Im talking about... I only learned the basics to get my laptop working with ubuntu :/ Because I was having wifi issues (https://bugzilla.kernel.org/show_bug.cgi?id=191601) I actually had the intel_idle.max_cstate=1 as one of my boot parameters at one time. I figured out the wifi issue but will try the intel_idle.max_cstate=1 to see if it helps the touchpad problem and report back. Something else of note. I noticed if I have my wireless mouse plugged in that the touchpad behaves much better (not perfect and usually it takes longer to degrade). |
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Created attachment 124726 [details] xinput list-props Dell Inspiron 3147 Ubuntu 16.04 after some time (about 3 or 4 hours) of using the laptop the quality of the tuchpad input seems to degrade. When i slide my finger over the touch pad it tries to select everything. instead of just moving across the screen it creates select windows as if i have the left button held. Once I restart the laptop it works fine for a few hours and eventually happens again Incidentally I did enable touch to click when i first installed libinput.