Status of left mouse bug sticking on X250: I am trying to find a way to put my X250 back in service, to replace the X220i that I fell back to given the serious nature of the LMSB (LMBS = "Left mouse button sticking")
1) By switching to a logitech USB mouse I am able to work on the machine. 2) I turned off the TrackPoint (red eraser head mouse) and the TrackPad in the BIOS. However even with the latest BIOS installed (see posting #26 above). Very important: When the trackpoint and trackpad are turned off in the BIOS, they are not disabled until I login. This is distinct from the behavior of the X220i for which turning off the TrackPad disables it upon reboot (as it should). Conclusion: There is a bug in the BIOS in that the settings for the TrackPad and TrackPoint following a boot, are ignored. 3) No combination of new kernels seems to have any effect on the LMBS bug. It seem likely to me that the issue is in the synaptics driver. This driver works fine on the X220i and the X201 (These are older laptops that I have been using after I retired the X250 from service, due to the LMBS problem made the laptop unuseable). 4) When I use the X250 with the Logitech USB mouse, I am able to work (I dont like taking my hands off the keyboard to reach for the mouse, but the LMBS makes using the TrackPoint unuseable, so it must be turned off) 5) There seems to be a new bug with the latest kernels. The screen randomly flashes for a fraction of a second. This happens about every 20 seconds, on average. Sometimes it happens every 5 seconds. This blink of the backlight is most irrititating. I dont think I can get used to this distraction as the screen is very bright, and the blink is impossible to ignore. This started happening with the newer kernels. I dont know exactly when, maybe somewhere around 4.5. 6) I have upgraded the OS to 16.04LTS. All of the above comments apply to 16.04LTS. 7) For daily use I will still be using X220i but at least I can work on the machine as long as I use the Logitech USB mouse, and can tolerate the blinking. This comment was written using the X250 in this mode. The blinking is giving me a headache! -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1506817 Title: left TPP/2 IBM TrackPoint "sticks on" randomly (X250 15.04) Status in linux package in Ubuntu: Confirmed Bug description: I have reported the details of this problem at https://answers.launchpad.net/ubuntu-certification/+question/272142 As summarized on that question: X250 analysis: I used the command on the X250 evtest /dev/input/event15 | grep EV_KEY I can see the bug, as follows: I click on button 1 (left) over and over. When I push the button down, I see it register as 1, and when I let go of the key, it registers as a 0. The bug is that every now and then (once every 20 clicks), when I let go of the left mouse button (BIN_LEFT), it does not return to state 0 (it stays in state 1). This is highly random, but cant be triggered more often, by dragging a window, which I do with BIN_LEFT. I am using a brand new X250, purchased in late July 2015. The system was returned 3 times to IBM repair as I assumed this was a hardware error. Now with the above, it seems clear that this is a software issue. Ubuntu 15.04 apt-cache policy xserver-xorg-input-synaptics xserver-xorg-input-synaptics: Installed: 1.8.1-1ubuntu1 Candidate: 1.8.1-1ubuntu1 Version table: *** 1.8.1-1ubuntu1 0 ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: xserver-xorg-input-synaptics 1.8.1-1ubuntu1 ProcVersionSignature: Ubuntu 3.19.0-30.34-generic 3.19.8-ckt6 Uname: Linux 3.19.0-30-generic x86_64 ApportVersion: 2.17.2-0ubuntu1.5 Architecture: amd64 CurrentDesktop: Unity Date: Fri Oct 16 04:52:03 2015 DistUpgraded: Fresh install DistroCodename: vivid DistroVariant: ubuntu InstallationDate: Installed on 2015-08-15 (61 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) MachineType: LENOVO 20CMCTO1WW ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-30-generic.efi.signed root=UUID=5718b40f-944e-47a3-acda-04e29336d0bc ro quiet splash vt.handoff=7 SourcePackage: xserver-xorg-input-synaptics UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/19/2015 dmi.bios.vendor: LENOVO dmi.bios.version: N10ET36W (1.15 ) dmi.board.asset.tag: Not Available dmi.board.name: 20CMCTO1WW dmi.board.vendor: LENOVO dmi.board.version: 0B98417 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN10ET36W(1.15):bd06/19/2015:svnLENOVO:pn20CMCTO1WW:pvrThinkPadX250:rvnLENOVO:rn20CMCTO1WW:rvr0B98417WIN:cvnLENOVO:ct10:cvrNone: dmi.product.name: 20CMCTO1WW dmi.product.version: ThinkPad X250 dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.12.1+15.04.20150410.1-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.60-2 version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.9-2ubuntu1~vivid2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.9-2ubuntu1~vivid2 version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3.1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2.2 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1 xserver.bootTime: Fri Oct 16 03:31:10 2015 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 1079 vendor LGD xserver.version: 2:1.17.1-0ubuntu3.1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1506817/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
