I have the same issue after upgrading from 18 to 18.1. I can't even right click on the panel because nothing happens. I tried to kill it with xkill but that didn't do anything. If I restart cinnamon with "cinnamon --replace &" in the terminal, this is the output I get:
[1] 17777 Cjs-Message: JS LOG: About to start Cinnamon St-Message: cogl npot texture sizes SUPPORTED Cjs-Message: JS LOG: Cinnamon started at Mon Dec 19 2016 14:13:43 GMT+0100 (CET) Cjs-Message: JS LOG: network applet: Cannot find connection for active (or connection cannot be read) Cjs-Message: JS LOG: network applet: Cannot find connection for active (or connection cannot be read) openGL version 3.3 detected (GL3 Cogl Driver) MetaSyncRing disabled: couldn't find required GL extensions, or the minimum safe openGL version was not met Cjs-Message: JS LOG: Invalid network device type, is 13 Cjs-Message: JS LOG: Invalid network device type, is 14 Cjs-Message: JS LOG: network applet: Found connection for active Cjs-Message: JS LOG: network applet: Found connection for active (cinnamon:17777): Cjs-WARNING **: JS ERROR: Error: can't convert NaN to an integer Chrome.prototype.updateRegions@/usr/share/cinnamon/js/ui/layout.js:706 LayoutManager.prototype._windowsRestacked@/usr/share/cinnamon/js/ui/layout.js:105 (cinnamon:17777): Cjs-WARNING **: JS ERROR: Error: can't convert NaN to an integer Chrome.prototype.updateRegions@/usr/share/cinnamon/js/ui/layout.js:706 ... and this keeps repeating in the terminal. ################################################# $ lspci 00:00.0 Host bridge: Intel Corporation 3rd Gen Core processor DRAM Controller (rev 09) 00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) 00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller (rev 04) 00:16.0 Communication controller: Intel Corporation 7 Series/C210 Series Chipset Family MEI Controller #1 (rev 04) 00:1a.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2 (rev 04) 00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04) 00:1c.0 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 1 (rev c4) 00:1c.1 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 2 (rev c4) 00:1c.2 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 3 (rev c4) 00:1d.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1 (rev 04) 00:1f.0 ISA bridge: Intel Corporation HM76 Express Chipset LPC Controller (rev 04) 00:1f.2 SATA controller: Intel Corporation 7 Series Chipset Family 6-port SATA Controller [AHCI mode] (rev 04) 00:1f.3 SMBus: Intel Corporation 7 Series/C210 Series Chipset Family SMBus Controller (rev 04) 01:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8192SE Wireless LAN Controller (rev 10) 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller (rev 05) 03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5229 PCI Express Card Reader (rev 01) $ uname -a Linux BUD-LAPTOP-022 4.4.0-53-lowlatency #74-Ubuntu SMP PREEMPT Fri Dec 2 17:03:30 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux $ lsb_release -a LSB Version: core-9.20160110ubuntu0.2-amd64:core-9.20160110ubuntu0.2-noarch:security-9.20160110ubuntu0.2-amd64:security-9.20160110ubuntu0.2-noarch Distributor ID: LinuxMint Description: Linux Mint 18.1 Serena Release: 18.1 Codename: serena $ cinnamon --version Cinnamon 3.2.6 ################################################# -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1159707 Title: Cinnamon panel / task bar becomes unresponsive to mouse To manage notifications about this bug go to: https://bugs.launchpad.net/linuxmint/+bug/1159707/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs