The situation is the same or even worse for my laptop (a Dell Latitude E6420) in the latest upstream kernel. I tested with the plain 3.0 kernel from kernel.org (from source) and the ubuntu mainline kernel at http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.0-oneiric/ (both 64bit).
In the 2.6.38 kernel, the touchpad is recognized as "ImPS/2 ALPS GlidePoint", vertical scrolling works but settings like tapping cannot be configured. In both new kernels my touchpad is recognized as a "PS/2 Generic Mouse" which is worse than in the default 2.6.38 kernel, because now even the vertical scrolling does not work anymore. lennart@latitude ~ $ uname -a Linux latitude 3.0.0-0300-generic #201107220917 SMP Fri Jul 22 09:20:45 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux lennart@latitude ~ $ cat /proc/bus/input/devices [..] I: Bus=0011 Vendor=0002 Product=0001 Version=0000 N: Name="PS/2 Generic Mouse" P: Phys=isa0060/serio1/input0 S: Sysfs=/devices/platform/i8042/serio1/input/input8 U: Uniq= H: Handlers=mouse0 event8 B: PROP=0 B: EV=7 B: KEY=70000 0 0 0 0 B: REL=3 I did some more research. I noticed some remarkable differences between the alps.c drivers in the 2.6 and 3.0 kernels. There are all kinds of functions missing in the 3.0 version, and I am not a kernel developer but it looks to me those missing functions are connected to the fact the ALPS is recognized as a PS/2 mouse in the newer kernel. See attached file for the output to "diff linux- source-2.6.38/drivers/input/mouse/alps.c linux-3.0/drivers/input/mouse/alps.c" Please let me know if you need more data. ** Attachment added: "diff linux-source-2.6.38/drivers/input/mouse/alps.c linux-3.0/drivers/input/mouse/alps.c" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/565543/+attachment/2244383/+files/alps.c.diff.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/565543 Title: Alps touchpad detected as ImPS/2 Generic Wheel Mouse(in VAIO E series) after the kernel upgrade To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/565543/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
