Could you share a little technical background on how the BIOS could affect what seems to be a problem manifested either in X or the Intel display driver? I'm not saying it couldn't play a role, but it seems extremely likely that the problem lies in one of those places.
I've been unsuccessful so far in attempts to update the BIOS, as Lenovo makes this process somewhat more difficult for users without Windows. The problem happened again today; While moving the cursor from monitor to another, it disappeared, and now it is only drawn on the external display. I can still hover/select/click things on the primary display, but the cursor is not drawn graphically. I would still greatly appreciate any suggestions for things that I can do when this does happen which would help narrow down what is happening and lead me closer to a repro. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1526079 Title: Mouse cursor sometimes becomes invisible Status in xorg package in Ubuntu: Incomplete Bug description: (This report is incomplete; I need some guidance regarding steps I can take the next time this happens so I can gather better information to report.) What happens: 1. I'll be working 2. The mouse cursor will become invisible for no apparent reason, typically on just one of my two monitors 3. I'll either continue working (in which case the cursor will usually come back for no apparent reason, eventually) or I'll restart X to get my cursor back This happens to me at least once a week while I'm working, and has gone on at least for 2 or 3 months if not longer. I think I first began observing this while on Ubuntu 15.04, and it has persisted since upgrading to 15.10 in October. There are things I try in order to force the cursor to reappear, to no avail, including: - Toggling org.gnome.settings-daemon.plugins.cursor active via gsettings - Switching to and from a TTY - Hovering over UI elements that force the cursor icon to change I think changing the resolution via xrandr causes it to reappear, but I need to wait until the next time it happens to confirm this. EDIT: Confirmed that changing resolution to something else and back using xrandr DOES help. I use a ThinkPad with an i7 with only integrated Intel graphics, connected via dock to an external display. My display configuration is a little unusual and uses hidpi, defined by the following commands: xrandr --output eDP1 --mode 2880x1620 --panning 2880x1620 --scale 1x1 --primary --dpi 250 xrandr --output DP2-1 --mode 2560x1440 --panning 3840x2160+2880+0 --scale 1.5x1.5 --dpi 144 ----------- ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: xorg 1:7.7+7ubuntu4 ProcVersionSignature: Ubuntu 4.2.0-18.22-generic 4.2.3 Uname: Linux 4.2.0-18-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true CurrentDesktop: Unity Date: Mon Dec 14 13:49:18 2015 DistUpgraded: 2015-11-03 14:44:11,845 DEBUG enabling apt cron job DistroCodename: wily DistroVariant: ubuntu DkmsStatus: vboxhost, 5.0.4, 3.19.0-31-generic, x86_64: installed vboxhost, 5.0.4, 4.2.0-16-generic, x86_64: installed vboxhost, 5.0.4, 4.2.0-18-generic, x86_64: installed vboxhost, 5.0.4, 4.2.0-19-generic, x86_64: installed EcryptfsInUse: Yes ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller [8086:0416] (rev 06) (prog-if 00 [VGA controller]) Subsystem: Lenovo Device [17aa:2210] InstallationDate: Installed on 2014-06-24 (538 days ago) InstallationMedia: Ubuntu-GNOME 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2) MachineType: LENOVO 20BECTO1WW ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-18-generic.efi.signed root=UUID=022a17a0-1dc9-4b5c-ad86-912739c13a73 ro quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display UpgradeStatus: Upgraded to wily on 2015-11-03 (40 days ago) dmi.bios.date: 03/19/2014 dmi.bios.vendor: LENOVO dmi.bios.version: GMET62WW (2.10 ) dmi.board.asset.tag: Not Available dmi.board.name: 20BECTO1WW dmi.board.vendor: LENOVO dmi.board.version: SDK0E50512 Std dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGMET62WW(2.10):bd03/19/2014:svnLENOVO:pn20BECTO1WW:pvrThinkPadT540p:rvnLENOVO:rn20BECTO1WW:rvrSDK0E50512Std:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20BECTO1WW dmi.product.version: ThinkPad T540p dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.12.2+15.10.20151015-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.64-1 version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.2-1ubuntu4 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.2-1ubuntu4 version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu9.1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0+git20150819-0ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20150808-0ubuntu4 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3 xserver.bootTime: Fri Dec 11 17:18:06 2015 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 10147 vendor ACI xserver.version: 2:1.17.2-1ubuntu9.1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1526079/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp