Hi, I just changed from Ubuntu 14.04 (flawlessly working) to 16.04 and experienced a similar behavior of my Logitech, Inc. Cordless Mouse: after a few seconds of inactivity, the mouse exhibits a lagging behavior. Interestingly, using a USB cord connected mouse does not show this behavior.
I searched the WWW and tried all proposed actions without success. However, I have not found THIS bug report. Finally, as a last random resort, I decided to fully disable the laptop mode ENABLE_LAPTOP_MODE_TOOLS=0 in /etc/laptop-mode/laptop-mode.conf and the problem disappeared. After that finding I searched the web regarding bugs in laptop mode and found this entry. A few information: lsusb yields (only the interesting line displayed here): Bus 003 Device 002: ID 046d:c501 Logitech, Inc. Cordless Mouse Receiver Relevant output of usb-devices: T: Bus=03 Lev=01 Prnt=01 Port=02 Cnt=01 Dev#= 2 Spd=1.5 MxCh= 0 D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 P: Vendor=046d ProdID=c501 Rev=09.10 S: Manufacturer=Logitech S: Product=USB Receiver C: #Ifs= 1 Cfg#= 1 Atr=a0 MxPwr=50mA I: If#= 0 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=01 Prot=02 Driver=usbhid I did not find any error or warning messages in the log files. So this is definitely a bug in or wrong parametrization of the laptop-mode tools or the programs invoked by laptop-mode. It would be good if this could be corrected in one of the next updates given the fact that this bug persists now for more than a year. Thanks and best wishes, Hans-Georg -- 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/1603659 Title: Power Management: USB mouse and keyboard laggy and loosing events Status in laptop-mode-tools package in Ubuntu: Confirmed Status in linux package in Ubuntu: Invalid Bug description: This issue is a regression after update to 16.04 (coming from 14.04). To my knowledge, I was using TLP together with 14.04, which got removed during the upgrade in favour of upower. Two devices behave unexpected reproducably after a fresh reboot: Bus 002 Device 004: ID 046a:0023 Cherry GmbH CyMotion Master Linux Keyboard G230 Bus 002 Device 003: ID 046d:c24c Logitech, Inc. G400s Optical Mouse It looks like a power management related issue. By default, - USB mouse pointer is invisible and mouse looses any event unless I press a mouse button (which also is executed in a dangerous manner at the last position of the invisible pointer) - USB keyboard is inactive unless I press a few keys. These first characters get lost in the output - This happens directly after reboot (e.g. first characters of password get lost, mouse is invisible). - After login, it still happens: After a few seconds of inactivity, mouse and keyboard are non-responsive again. - In addition, I also experience lost events without any delay from time to time - In addition, scrolling with the mouse is laggy in particular Most of these problems are gone as soon as I disable powersave in powertop for mouse and keyboard: Bad Automatische Bereitschaft für USB-Gerät G400s Optical Gaming Mouse [Logitech] Bad Automatische Bereitschaft für unbekanntes USB-Gerät 2-1.2 [046a:0023] The only remaining problem is laggy scrolling and sometimes loosing events like keyboard presses, but this could still be another issue. The powertop status of other USB devices does not have an effect on this workaround. However, the workaround via powertop is lost after next reboot. It also has no effect when changing USB-Ports or USB-Controllers. I tried - built-in USB 2.0 Ports of my DELL Latitude E5510 (1d6b:0002) - replicated USB 2.0 ports of my docking station PR02X (1d6b:0002) - PCMCIA USB 3.0 Express card (1d6b:0003) Accordingly, this issue is not related to particular USB controllers/hubs. Plus, as two non-related USB hardware devices are concerned, this issue also might not be related to particular USB devices, bat rather affect many USB devices. I don't experience any problems when using the built-in keyboard of the DELL Latitude E5510. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-31-generic 4.4.0-31.50 ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13 Uname: Linux 4.4.0-31-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: thomas 3933 F.... pulseaudio CurrentDesktop: GNOME-Flashback:Unity Date: Sat Jul 16 17:43:05 2016 HibernationDevice: RESUME=UUID=28eded29-f9e6-44b5-9e54-c4dd60c8e3cd InstallationDate: Installed on 2014-11-29 (595 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) MachineType: Dell Inc. Latitude E5510 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-4.4.0-31-generic root=UUID=6408c2d9-1b60-43d7-9a7f-2dceeb40de28 ro rootflags=subvol=@ quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-31-generic N/A linux-backports-modules-4.4.0-31-generic N/A linux-firmware 1.157.2 SourcePackage: linux UpgradeStatus: Upgraded to xenial on 2016-06-15 (30 days ago) dmi.bios.date: 12/06/2013 dmi.bios.vendor: Dell Inc. dmi.bios.version: A16 dmi.board.name: 023HKR dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA16:bd12/06/2013:svnDellInc.:pnLatitudeE5510:pvr0001:rvnDellInc.:rn023HKR:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E5510 dmi.product.version: 0001 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/laptop-mode-tools/+bug/1603659/+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
