From: Dmitry Torokhov Sent: 05/10/13 12:54 AM > > On Thu, May 09, 2013 at 10:59:58PM +0200, Tibor Billes wrote: > > Hi, > > > > I found that after upgrading my kernel from 3.8.7 to 3.9 my touchpad only > > works partly. By that I mean I can use the touchpad to move the cursor > > around, but I cannot click with it by tapping. > > Is the touchpad recognized as ALPS or PS/2 mouse in 3.8.7? Also, can you > check that touchpad tapping is enabled in your desktop environment? In 3.8.7 it is recognized as PS/2 mouse and the desktop environment doesn't even offer any touchpad settings. In 3.9.1 the touchpad is recognized as 'AlpsPS/2 ALPS DualPoint TouchPad' and yes, the touchpad settings appeared, and yes, clicking was disabled. Enabled it, works like a charm :) So what happened is that the 3.8.7 kernel did not recognize my touchpad, so it fell back to PS/2 which worked well for me. The 3.9 kernel recongizes my touchpad correctly because Kevin updated the driver, and my system started using a different configuration as it knew it was a touchpad and not some PS/2 device. Am I right? I recall looking for touchpad settings in one of the 3.8.x kernels and I didn't find any so I didn't bother looking for it again in 3.9... In this case I'm sorry for the false report, and thank you guys for the driver update :) > Thanks. > > > My machine is a Dell > > Latitude E5530. Since it is 100% reproducible on my machine, I bisected it, > > and found this commit: > > > > commit 1302bac33d9e88cd43e482191a806998f3ed43cc > > Author: Kevin Cernekee <cernekee@xxxxxxxxx> > > Date: Wed Feb 13 22:27:08 2013 -0800 > > > > Input: ALPS - add support for "Rushmore" touchpads > > > > Rushmore touchpads are found on Dell E6230/E6430/E6530. They use the V3 > > protocol with slightly tweaked init sequences and report formats. > > > > The E7 report is 73 03 0a, and the EC report is 88 08 1d > > > > Credits: Emmanuel Thome reported the MT bitmap changes. > > > > Signed-off-by: Kevin Cernekee <cernekee@xxxxxxxxx> > > Tested-by: Dave Turvene <dturvene@xxxxxxxxxxxx> > > Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> > > > > I did the bisection between 3.8.7 and 3.9, but also tried 3.9.1, it is bad > > too. I also tried reverting that commit to make sure that it really is > > what made my touchpad not working. The revert did fix my problem. > > > > That's all I gathered so far, but I'd be happy to help further in any way > > I can, just let me know. > > > > Thanks, > > Tibor > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-input" in > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > -- > Dmitry -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
