Bug 196719
| Summary: | SynPS/2 Synaptics TouchPad looses two finger scrolling after wake from suspend | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Johannes Seitz (johannes.w.seitz) |
| Component: | Input Devices | Assignee: | drivers_input-devices |
| Status: | NEW --- | ||
| Severity: | normal | CC: | admin, admin, benh, benjamin.tissoires, bjo, contact.han, dmitry.torokhov, f_bugzilla, gasmelt+kernelorg, info, jb.kernel, jeremy9856, johannes.w.seitz, kai.heng.feng, peter.hutterer, thomas |
| Priority: | P1 | ||
| Hardware: | x86-64 | ||
| OS: | Linux | ||
| Kernel Version: | 4.12.7 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: | attachment-22902-0.html | ||
|
Description
Johannes Seitz
2017-08-21 13:09:18 UTC
Correction: The latest mainline kernel that worked for me was 4.11.9 and *not* 4.12.6. Sorry! I have the same problem with a Thinkpad T440s. What's interesting is that scrolling still works, but now requires 3 fingers instead of 2. Created attachment 258041 [details] attachment-22902-0.html I just tried to reproduce this. Same here! It works with three fingers instead of two. This is so weird! On 21 August 2017 at 21:56, <bugzilla-daemon@bugzilla.kernel.org> wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=196719 > > Thomas Bächler (thomas@archlinux.org) changed: > > What |Removed |Added > ------------------------------------------------------------ > ---------------- > CC| |thomas@archlinux.org > > --- Comment #2 from Thomas Bächler (thomas@archlinux.org) --- > I have the same problem with a Thinkpad T440s. What's interesting is that > scrolling still works, but now requires 3 fingers instead of 2. > > -- > You are receiving this mail because: > You are on the CC list for the bug. > You reported the bug. Is it still shown as "SynPS/2 Synaptics" in 4.12 or became "Synaptics TM3289-002" or similar? I.e. did it switch over to RMI from PS/2? Can you try vanilla 4.12? It did not change, it's still listed as follows: Device: SynPS/2 Synaptics TouchPad Kernel: /dev/input/event15 Group: 7 Seat: seat0, default Size: 97x67mm Capabilities: pointer Tap-to-click: disabled Tap-and-drag: enabled Tap drag lock: disabled Left-handed: disabled Nat.scrolling: disabled Middle emulation: disabled Calibration: n/a Scroll methods: *two-finger edge Click methods: *button-areas clickfinger Disable-w-typing: enabled Accel profiles: none Rotation: n/a Here are the changes that went into Synaptics PS/2 driver: git log --oneline v4.11.9..v4.12.7 -- drivers/input/mouse/synaptics.c 2fef826e45c6 Input: synaptics - tell users to report when they should be using rmi-smbus f4101ff87daf Input: synaptics - warn the users when there is a better mode f4947d79a708 Input: synaptics - keep PS/2 around when RMI4_SMB is not enabled 2755551188d2 Input: synaptics - clear device info before filling in f6c4442bfa08 Input: synaptics - use u8 instead of unsigned char 212baf03a30a Input: synaptics - do not abuse -1 as return value 991d29fe02a7 Input: synaptics - use BIT() and GENMASK() macros 2c6ecbba90d4 Input: synaptics - add synaptics_query_int() e839ffab0289 Input: synaptics - add support for Intertouch devices 6c53694fb222 Input: synaptics - split device info into a separate structure 996b9eedd061 Input: synaptics - do not mix logical and bitwise operations The one I'd looked closer at is "991d29fe02a7 Input: synaptics - use BIT() and GENMASK() macros"> Can you try reverting them one by one and see which one is at fault? There's another report at Launchpad [1]. The bisection result says e839ffab028981ac77f650faf8c84f16e1719738 is the first bad commit. [1] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1722478 This bug is still present on 4.15.0 (Ubuntu 18.04). I haven't tested mainline yet. I am working around the issue with the kernel parameter "psmouse.synaptics_intertouch=0", so that also seems to confirm that the offending commit is e839ffab0289 (CC'ing Benjamin). I can confirm this issue is still present in 18.04 with a new model W540. If anyone wants me to provide any info, please let me know what you would like. Will be glad to help. Try removing "blacklist i2c_i801" from /etc/modprobe.d/blacklist.conf. Thanks for the tip Kai-Heng Feng. It appears this resolves the issue thus far with the two finger click issue, but it seems not to recognize the two finger scroll still however I think that should probably be a different issue. The bug is still present in 5.3 (from Ubuntu). I haven't had a chance to check upstream yet. Is any maintainer monitoring this ? I have the same problem on my Thinkpad x240 with Ubuntu 20.04 Linux E5450 5.4.0-42-generic #46-Ubuntu SMP Fri Jul 10 00:24:02 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux This kernel parameter workaround "psmouse.synaptics_intertouch=0" work in the meantime (forever since it's 3 years old bug ??) I can confirm this is still very much an issue on elementary 6 based on Ubuntu LTS 20.04, also includes jittering and jumping every so often even with the kernel peramiter workaround mentioned in other comments I've submitted a fix to the input maintainers. I've been running this since the 23rd and it seems to be fine. No need to pass any params to the driver to change the protocol or anything like that. It's yet to be reviewed but since it's a single line change I'd hope it'll get look at at some point soon. You can test the patch yourself in your own build. https://patchwork.kernel.org/project/linux-input/patch/1e2e981b-05af-43a7-bdfe-424d8783d28f@www.fastmail.com/ Created attachment 294373 [details] attachment-28066-0.html I'm also experiencing periodic jitteryness of the touchpad tracking, but I've no clue as to how to reproduce it. It seeming starts at random, and causes any sort of tracking to make the cursor jump vertically (oddly never horizontally) while being moved. This may be a hardware issue, but since I'm unable to test the patch I will have to try it when it gets merged. 28 Aralık 2020 Pazartesi tarihinde, 12:29 saatinde, bugzilla-daemon@bugzilla.kernel.org şöyle yazmış: > https://bugzilla.kernel.org/show_bug.cgi?id=196719 > > Justin Busby (jb.kernel@fastmail.com) changed: > > What |Removed |Added > ---------------------------------------------------------------------------- > CC| |jb.kernel@fastmail.com > > --- Comment #15 from Justin Busby (jb.kernel@fastmail.com) --- > I've submitted a fix to the input maintainers. I've been running this since > the > 23rd and it seems to be fine. No need to pass any params to the driver to > change the protocol or anything like that. > > It's yet to be reviewed but since it's a single line change I'd hope it'll > get > look at at some point soon. > > You can test the patch yourself in your own build. > > > https://patchwork.kernel.org/project/linux-input/patch/1e2e981b-05af-43a7-bdfe-424d8783d28f@www.fastmail.com/ > > -- > You may reply to this email to add a comment. > > You are receiving this mail because: > You are on the CC list for the bug. I sometimes get the jitter too but I've yet to find a reliable way to reproduce it. I also get low speed jitter where the packets reported to the interrupt handler don't have new x and y coords but the pressure is changing. This results in jerkiness at very low speed which I can reliably reproduce. This looks to some extent like h/w (or rather touchpad firmware) but i need to work my way down the input stack to convince myself of that yet. I'm trying to work through touchpad related stuff this week as i have some spare time. I'll update if i get anywhere. I don't know if it's related to the jitter you experience but with these tweaks the cursor is really precise now (read both issue as they are related) https://gitlab.freedesktop.org/libinput/libinput/-/issues/521 https://gitlab.freedesktop.org/libinput/libinput/-/issues/537 2021-01-09 (土) の 09:42 +0000 に bugzilla-daemon@bugzilla.kernel.org さんは書きました: > https://bugzilla.kernel.org/show_bug.cgi?id=196719 > > --- Comment #18 from paviluf (jeremy9856@gmail.com) --- > I don't know if it's related to the jitter you experience but with > these tweaks > the cursor is really precise now (read both issue as they are > related) > > https://gitlab.freedesktop.org/libinput/libinput/-/issues/521 > https://gitlab.freedesktop.org/libinput/libinput/-/issues/537 > This seem to have fixed the issue for me, but the standing issue that it is unusable without any modification. The average user would not bother finding out what a GRUB config is or how to add kernel boot perameters. Doing these sorts of things so that their touchpad (and trackpoint) doesn't permenantly fail after they wake their laptop is not an option. As for the libinput modifications you made in your PR, have they been added to the systemd source? Would that fix the jitter issues for other users out-of-the-box? The libinput modifications I made have been merge to systemd |