KDE - wrong screen resolution

Question

I just installed Linux Mint 17.2 with KDE. The default screen resolution is 1280x1024. I cannot change it to 1920x1080, which is the resolution of my monitor.

Is this normal? Is there any way to change it?

Edit:

I have the following dmesg outputs

inf3rno@inf3rno-EP43T-USB3:~ > dmesg | grep driver
[    0.068000] Performance Events: PEBS fmt0+, 4-deep LBR, Core2 events, Intel PMU driver.
[    0.177157] usbcore: registered new interface driver usbfs
[    0.177157] usbcore: registered new interface driver hub
[    0.177157] usbcore: registered new device driver usb
[    0.704753] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252)
[    0.706155] Serial: 8250/16550 driver, 32 ports, IRQ sharing enabled
[    0.732523] tun: Universal TUN/TAP device driver, 1.6
[    0.732566] PPP generic driver version 2.4.2
[    0.736441] ehci-pci: EHCI PCI platform driver
[    0.768344] ehci-platform: EHCI generic platform driver
[    0.768358] ohci-pci: OHCI PCI platform driver
[    0.768370] ohci-platform: OHCI generic platform driver
[    0.768379] uhci_hcd: USB Universal Host Controller Interface driver
[    0.771395] i2c /dev entries driver
[    1.598398] cdrom: Uniform CD-ROM driver Revision: 3.20
[    1.647780] r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded
[    1.652501] usbcore: registered new interface driver usb-storage
[    1.653874] usbcore: registered new interface driver uas
[    1.900449] hidraw: raw HID events driver (C) Jiri Kosina
[    2.073901] usbcore: registered new interface driver usbhid
[    2.073903] usbhid: USB HID core driver
inf3rno@inf3rno-EP43T-USB3:~ > dmesg | grep Xorg
inf3rno@inf3rno-EP43T-USB3:~ > dmesg | grep -e error
[    4.148630] EXT4-fs (sda3): re-mounted. Opts: errors=remount-ro

I have an ACPI PCC probe failed message by booting and I have 3.19 kernel, which I don't really understand. The previous distro on this drive had 3.19 kernel, but I am sure I checked the format drive checkbox by installing the Mint+KDE. I should probably format the drive and install Mint+KDE again.

Answer 1

I installed the vivid drivers (the 3.19 kernel was already installed)

sudo apt-get install --install-recommends libglapi-mesa-lts-vivid libgl1-mesa-glx-lts-vivid xserver-xorg-lts-vivid xserver-xorg-input-all-lts-vivid xserver-xorg-video-all-lts-vivid libgl1-mesa-dri-lts-vivid libglapi-mesa-lts-vivid:i386 libgl1-mesa-dri-lts-vivid:i386 libgl1-mesa-glx-lts-vivid:i386 libgles2-mesa-lts-vivid libglapi-mesa-lts-vivid mesa-vdpau-drivers-lts-vivid xserver-xorg-dev-lts-vivid mesa-common-dev-lts-vivid libgles2-mesa-dev-lts-vivid libgles1-mesa-dev-lts-vivid libgl1-mesa-dev-lts-vivid libegl1-mesa-dev-lts-vivid libglew-dev

Somehow that solved the problem. I suspect that something went wrong by the installation of the system, and included parts from the previous system (Mint + Xfce) but I am not sure.

Answer 2

No, this is not normal at all: it sounds like you have a problem with the X display manager, possibly a missing driver.

You should search for error messages in /var/log/Xorg* (easy to spot: EE is an error, WW is just a warning) and via the command dmesg. You may try several different combinations, like

   dmesg | grep driver
   dmesg | grep Xorg
   dmesg | grep -e error

or just parse the whole kernel ring buffer by visual inspection,

   dmesg | less

When you find an error message, that will give you some idea of what is going wrong. And, BTW, you do not have an NVIDIA display, do you?