Ubuntu: Black screen and mouse pointer not moving after logging in



Question:

I think after some upgrade this started.

  • The graphical login screen is enabled and I get to it.
  • After entering the credentials, the system show the loader but then I get a black screen and an empty white border mouse cursor at the top left of the screen that can't be moved.

I have two users on the machine. This only happens with one of the users. With the other one, logging in, running x and kde has no problem.

I've tried to rename ~/.kde folder of that user to something else, reboot and login again. This did not work.

I've tried running previous two kernel versions in the grup menu, still the same problem.

Its seems related to some configuration per that specific user, but not sure.

lspci info:

00:00.0 Host bridge: Intel Corporation 3rd Gen Core processor DRAM Controller (rev 09)  00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor PCI Express Root Port (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)  00:1d.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 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Thames [Radeon HD 7500M/7600M Series] (rev ff)  02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 09)  03:00.0 Network controller: Qualcomm Atheros AR9485 Wireless Network Adapter (rev 01)  

uname -a info:

    Linux elpdpc1 4.4.0-77-generic #98-Ubuntu SMP Wed Apr 26 08:34:02 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux  

sudo lshw -short info:

H/W path         Device       Class          Description  ========================================================                                system         350V5C/351V5C/3540VC/3440VC (P09ABE.012.CP)  /0                            bus            NP350V5C-S06IL  /0/0                          memory         64KiB BIOS  /0/41                         memory         1MiB L2 cache  /0/42                         memory         256KiB L1 cache  /0/43                         memory         6MiB L3 cache  /0/44                         memory         16GiB System Memory  /0/44/0                       memory         8GiB SODIMM DDR3 Synchronous 1600 MHz (0.6 ns)  /0/44/1                       memory         DIMM [empty]  /0/44/2                       memory         8GiB SODIMM DDR3 Synchronous 1600 MHz (0.6 ns)  /0/44/3                       memory         DIMM [empty]  /0/45                         processor      Intel(R) Core(TM) i7-3610QM CPU @ 2.30GHz  /0/100                        bridge         3rd Gen Core processor DRAM Controller  /0/100/1                      bridge         Xeon E3-1200 v2/3rd Gen Core processor PCI Express Root Port  /0/100/1/0                    generic        Illegal Vendor ID  /0/100/2                      display        3rd Gen Core processor Graphics Controller  /0/100/14                     bus            7 Series/C210 Series Chipset Family USB xHCI Host Controller  /0/100/14/0      usb4         bus            xHCI Host Controller  /0/100/14/1      usb3         bus            xHCI Host Controller  /0/100/14/1/3                 input          Microsoft  /0/100/16                     communication  7 Series/C210 Series Chipset Family MEI Controller #1  /0/100/1a                     bus            7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2  /0/100/1a/1      usb1         bus            EHCI Host Controller  /0/100/1a/1/1                 bus            Integrated Rate Matching Hub  /0/100/1a/1/1/1               generic        USB2.0-CRW  /0/100/1a/1/1/4               multimedia     WebCam SC-13HDL11939N  /0/100/1b                     multimedia     7 Series/C210 Series Chipset Family High Definition Audio Controller  /0/100/1c                     bridge         7 Series/C210 Series Chipset Family PCI Express Root Port 1  /0/100/1c/0      enp2s0       network        RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller  /0/100/1c.1                   bridge         7 Series/C210 Series Chipset Family PCI Express Root Port 2  /0/100/1c.1/0    wlp3s0       network        AR9485 Wireless Network Adapter  /0/100/1d                     bus            7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1  /0/100/1d/1      usb2         bus            EHCI Host Controller  /0/100/1d/1/1                 bus            Integrated Rate Matching Hub  /0/100/1f                     bridge         HM76 Express Chipset LPC Controller  /0/100/1f.2                   storage        7 Series Chipset Family 6-port SATA Controller [AHCI mode]  /0/100/1f.3                   bus            7 Series/C210 Series Chipset Family SMBus Controller  /0/1             scsi0        storage          /0/1/0.0.0       /dev/sda     disk           240GB KINGSTON SHFS37A  /0/1/0.0.0/1     /dev/sda1    volume         500MiB Windows NTFS volume  /0/1/0.0.0/2     /dev/sda2    volume         48GiB Windows NTFS volume  /0/1/0.0.0/3     /dev/sda3    volume         147GiB Extended partition  /0/1/0.0.0/3/5   /dev/sda5    volume         46GiB Linux filesystem partition  /0/1/0.0.0/3/6   /dev/sda6    volume         93GiB Linux filesystem partition  /0/1/0.0.0/3/7   /dev/sda7    volume         7628MiB Linux swap / Solaris partition  /0/1/0.0.0/4     /dev/sda4    volume         14GiB HPFS/NTFS partition  /0/2             scsi4        storage          /0/2/0.0.0       /dev/cdrom   disk           CDDVDW SN-208BB  /1                            power          Battery Name  /2                            power          Battery Name  /3                            power          Battery Name  /4                            power          Battery Name  /5                            power          To Be Filled By O.E.M.  /6               veth9c83903  network        Ethernet interface  /7               veth43837bd  network        Ethernet interface  

lsb_release -a info:

Distributor ID: Ubuntu  Description:    Ubuntu 16.04.2 LTS  Release:        16.04  Codename:       xenial  

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