[Bug 620520] Re: touch sensor very jittery
Great news, Andreas -- thanks! -- touch sensor very jittery https://bugs.launchpad.net/bugs/620520 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 620520] Re: touch sensor very jittery
I can confirm this has been fixed for me in Maverick. -- touch sensor very jittery https://bugs.launchpad.net/bugs/620520 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 620520] Re: touch sensor very jittery
** Changed in: utouch (Ubuntu) Status: Fix Committed = Fix Released -- touch sensor very jittery https://bugs.launchpad.net/bugs/620520 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 620520] Re: touch sensor very jittery
Henrik, I've reassigned to you, based on Chase's last comment. Can you confirm his supposition? ** Changed in: utouch (Ubuntu) Assignee: Chase Douglas (chasedouglas) = Henrik Rydberg (rydberg) -- touch sensor very jittery https://bugs.launchpad.net/bugs/620520 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 620520] Re: touch sensor very jittery
** Changed in: utouch (Ubuntu) Status: In Progress = Fix Committed -- touch sensor very jittery https://bugs.launchpad.net/bugs/620520 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 620520] Re: touch sensor very jittery
This is currently in Chase's queue; we should be hearing something from him soon. Chase, can you attach the branch(es) you're working on to this ticket? Thanks! ** Changed in: utouch (Ubuntu) Assignee: Henrik Rydberg (rydberg) = Chase Douglas (chasedouglas) ** Changed in: utouch (Ubuntu) Status: Triaged = In Progress -- touch sensor very jittery https://bugs.launchpad.net/bugs/620520 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 620520] Re: touch sensor very jittery
I think this is fixed in henrik's updates to hid-ntrig. It seems much better for me now. I think Henrik should be able to get a patch sent out to the kernel team for inclusion in the RC image. Also, since this is a driver issue that's part of the kernel, we can't easily maintain a bzr branch for it. -- touch sensor very jittery https://bugs.launchpad.net/bugs/620520 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 620520] Re: touch sensor very jittery
I'm also affected, using the same machine (Thinkpad T410s with N-Trig MultiTouch). For reference I attached an image created with the gimp using a 1-pixel brush, I held my finger steadily at one point on the screen for ~3 seconds with moderate pressure. The blob has a diameter of ~10 pixels, with substantial pressure it grows to 15~20 pixels. The jitter frequency is very high (holding the finger for only one second produces almost the same blob). With this jitter the touchscreen is only usable for button presses and the likes, painting, dragging, scrolling is very frustrating. Windows drivers not only filter the noise out perfectly, border reach is also improved. With Ubuntu, it's almost impossible to point closer than 20 pixels to the borders of the screen. It seems that under Windows some kind of formula re-maps the coordinates when close to a border, that'd be a great feature in mtdev or the n-trig driver (Let me know if I'm supposed to fill another bug for this). ** Attachment added: n-trig_jitter_3sec.png https://bugs.launchpad.net/ubuntu/+source/utouch/+bug/620520/+attachment/1530415/+files/n-trig_jitter_3sec.png -- touch sensor very jittery https://bugs.launchpad.net/bugs/620520 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 620520] Re: touch sensor very jittery
Thank you for the information, we will apply a fix for this shortly. I think the kind of soft snapping you refer to is a great idea, but since it depends on window details, I think it is better placed higher up the stack. -- touch sensor very jittery https://bugs.launchpad.net/bugs/620520 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 620520] Re: touch sensor very jittery
By setting the fuzz parameters large in the input driver (hid-ntrig), the mtdev module will pick those up and perform the filtering. Thus, and upstream patch is needed. Adding rafi to this bug. -- touch sensor very jittery https://bugs.launchpad.net/bugs/620520 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 620520] Re: touch sensor very jittery
** Changed in: utouch (Ubuntu) Assignee: (unassigned) = Henrik Rydberg (rydberg) -- touch sensor very jittery https://bugs.launchpad.net/bugs/620520 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 620520] Re: touch sensor very jittery
This is a known issue with the N-Trig touchscreens in Linux. There may be some filtering we can do inside the kernel to limit the jitter. ** Changed in: utouch (Ubuntu) Status: New = Triaged ** Changed in: utouch (Ubuntu) Importance: Undecided = High ** Changed in: utouch (Ubuntu) Milestone: None = ubuntu-10.10 -- touch sensor very jittery https://bugs.launchpad.net/bugs/620520 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 620520] Re: touch sensor very jittery
** Attachment added: Dependencies.txt https://bugs.launchpad.net/bugs/620520/+attachment/1500288/+files/Dependencies.txt -- touch sensor very jittery https://bugs.launchpad.net/bugs/620520 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
