Red Hat Bugzilla – Bug 177868
Synaptics vertical scroll broken in 2.6.15
Last modified: 2015-01-04 17:24:21 EST
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.12) Gecko/20050922 Fedora/1.0.7-1.1.fc4 Firefox/1.0.7 Description of problem: In the above kernel version (from updates-testing) the Synaptics touchpad vertical scrolling does not work. I did not do anything to set this up after installing, it just worked. If I reboot back into the previous kernel I had, 2.6.14-1.1653_FC4, it works again. I don't know if this is a configuration problem or a bug, but it appears as a regression. I see that there is an 1824 release out, but I didn't see any changes related to this in the changelog. Version-Release number of selected component (if applicable): kernel-2.6.15-1.1823_FC4 How reproducible: Always Steps to Reproduce: 1. Update to above kernel 2. Try to use vertical scroll area on touchpad 3. Actual Results: Mouse pointer moves up and down vertically. Expected Results: Scroll up/down events triggered. Additional info:
Created attachment 123226 [details] Differences in dmesg output between working and non-working kernels
/proc/bus/input/devices from 2.6.14: I: Bus=0011 Vendor=0001 Product=0001 Version=ab41 N: Name="AT Translated Set 2 keyboard" P: Phys=isa0060/serio0/input0 H: Handlers=kbd event0 B: EV=120013 B: KEY=4 2000078 3802078 f840d001 f2ffffdf ffefffff ffffffff fffffffe B: MSC=10 B: LED=7 I: Bus=0011 Vendor=0002 Product=0007 Version=0000 N: Name="SynPS/2 Synaptics TouchPad" P: Phys=isa0060/serio4/input0 H: Handlers=mouse0 event1 B: EV=b B: KEY=6420 0 70000 0 0 0 0 0 0 0 0 B: ABS=11000003 and from 2.6.15: I: Bus=0011 Vendor=0001 Product=0001 Version=ab41 N: Name="AT Translated Set 2 keyboard" P: Phys=isa0060/serio0/input0 S: Sysfs=/class/input/input0 H: Handlers=kbd event0 B: EV=120013 B: KEY=4 2000078 3802078 f840d001 f2ffffdf ffefffff ffffffff fffffffe B: MSC=10 B: LED=7 I: Bus=0011 Vendor=0002 Product=0007 Version=0000 N: Name="SynPS/2 Synaptics TouchPad" P: Phys=isa0060/serio4/input0 S: Sysfs=/class/input/input1 H: Handlers=mouse0 event1 B: EV=b B: KEY=6420 0 70000 0 0 0 0 0 0 0 0 B: ABS=11000003 Only differences are the added Sysfs line and some differences in the B: values.
From what I can tell it seems a newer version of udev is needed for 2.6.15. There are no entries for the touchpad being created in /dev/input. This causes the Synaptics driver to fail to load and results in no Synaptics-specific functionality. Unfortunately it seems there is no updated udev for FC4 currently available.
*nod*, the udev update hasn't been built yet, and there's a bug filed on it already, though I don't have the number handy to dupe against right now.
This is a mass-update to all currently open kernel bugs. A new kernel update has been released (Version: 2.6.15-1.1830_FC4) based upon a new upstream kernel release. Please retest against this new kernel, as a large number of patches go into each upstream release, possibly including changes that may address this problem. This bug has been placed in NEEDINFO_REPORTER state. Due to the large volume of inactive bugs in bugzilla, if this bug is still in this state in two weeks time, it will be closed. Should this bug still be relevant after this period, the reporter can reopen the bug at any time. Any other users on the Cc: list of this bug can request that the bug be reopened by adding a comment to the bug. If this bug is a problem preventing you from installing the release this version is filed against, please see bug 169613. Thank you.
Verified working with the current kernel and udev versions.