On 20/10/12 02:55 , Ping Cheng wrote: > On Fri, Oct 19, 2012 at 12:02 AM, Jonas Jelten <jel...@in.tum.de> wrote: >> On 10/19/2012 07:38 AM, Peter Hutterer wrote: >>> On Sat, Aug 11, 2012 at 05:56:33PM +0200, Jan Steffens wrote: >>>> On Sat, Aug 11, 2012 at 5:24 PM, Wataru Sakurai <wat...@aoisakura.jp> >>>> wrote: >>>>> Hi Jonas, >>>>> >>>>> I had the same problem. my tablet's product id is 0094 before I know, >>>>> and Tablet not working. >>>>> >>>>> So, I built linux kernel 3.6-rc1 and boot it, then the problem is >>>>> resolved. >>>>> Please don't do "reboot", do power off ( "shutdown" ) and next do power >>>>> on. >>>>> Now I can use stylus, eraser, and touch. tablet's product id is 00E6. >>>> >>>> Is there a particular commit in 3.6 that fixes it? >>> >>> bringing this up late, but still: >>> I suspect this may be a hardware issue. I had this same issue for a while >>> and after digging into this today it doesn't seem to be related to a kernel >>> version. I even downgraded to an older kernel >>> >>> $> uname -r >>> 3.3.4-5.fc17.x86_64 >>> >>> rebooting, etc. didn't work. Powering off, waiting a few secs and starting >>> it up again worked (with that kernel above). >>> >>> Cheers, >>> Peter >>> >> At the moment it's working stable, i haven't had the usbid change for a >> few weeks. Do you think I should contact Lenovo to have it fixed before >> warranty ends? > > You won't get anything fixed by Lenovo. The issue you see only happens > with kernel 3.5. There was a bug in 3.5.3 [1] that was introduced by > not applying all patches I submitted. It stayed in 3.5.4 until I > brought the fix to GregKH. The fix got in 3.5.5 [2]. > > The root cause is somewhere in the kernel tablet is set to a wrong > mode. Once it is in that mode, a reboot won't reset it to normal. We > have to power it off and wait a few seconds for all bits to reset. > That's why I tell people to even unplug the power cable since bits may > stay as long as they get power. > > If you do not run kernel 3.5.3 or 3.5.4, you won't see this issue any more.
how embarassing. for some reason I didn't see the remainder of this thread yesterday and though this was still an unsolved issue. Thanks for explaining it (and of course for fixing the issue in the first place :) Cheers, Peter ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_sfd2d_oct _______________________________________________ Linuxwacom-devel mailing list Linuxwacom-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxwacom-devel
