what causes the screen to flicker when i scroll? This is on a laptop? It worked fine on Leap.
Thanks,
Ron
Which DE are you using? A likely graphics issue, so a good idea to publish your graphics card details to start with
/usr/sbin/hwinfo --gfxcard
or
lspci -nnk |grep '\03' -A
Maybe your configured boot options too
cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-4.9.0-2-default root=UUID=5764feb8-1dfa-410e-8602-50b896e98db4 resume=/dev/sda5 splash=silent quiet showopts
[QUOTE/usr/sbin/hwinfo --gfxcard[/QUOTE]
danorske@linux-0sme:~> /usr/sbin/hwinfo --gfxcard
16: PCI 105.0: 0300 VGA compatible controller (VGA)
[Created at pci.378]
Unique ID: ul7N.fqdkMh7f9M7
Parent ID: vSkL.QA_hbVWU301
SysFS ID: /devices/pci0000:00/0000:00:01.0/0000:01:05.0
SysFS BusID: 0000:01:05.0
Hardware Class: graphics card
Model: “ATI RS780M [Mobility Radeon HD 3200]”
Vendor: pci 0x1002 “ATI Technologies Inc”
Device: pci 0x9612 “RS780M [Mobility Radeon HD 3200]”
SubVendor: pci 0x103c “Hewlett-Packard Company”
SubDevice: pci 0x30fc
Driver: “radeon”
Driver Modules: “drm”
Memory Range: 0xc0000000-0xcfffffff (ro,non-prefetchable)
I/O Ports: 0x7000-0x70ff (rw)
Memory Range: 0xd2400000-0xd240ffff (rw,non-prefetchable)
Memory Range: 0xd2300000-0xd23fffff (rw,non-prefetchable)
Memory Range: 0x000c0000-0x000dffff (rw,non-prefetchable,disabled)
IRQ: 18 (472902 events)
I/O Port: 0x00 (rw)
Module Alias: “pci:v00001002d00009612sv0000103Csd000030FCbc03sc00i00”
Driver Info #0:
Driver Status: radeon is active
Driver Activation Cmd: “modprobe radeon”
Config Status: cfg=new, avail=yes, need=no, active=unknown
Attached to: #26 (PCI bridge)
Primary display adapter: #16
danorske@linux-0sme:~>
Please enclose posted output within CODE tags. Refer to the ‘#’ button in the editor, or manually add them if using NNTP.
Which desktop environment? (Gnome, KDE Plasma 5, …)
While waiting for further advice from others, I’ve read a suggestion to use ’ Option “TearFree” “on”’ mentioned in the following pages
https://wiki.archlinux.org/index.php/ATI
https://cubethethird.wordpress.com/2016/06/14/eliminate-screen-tearing-with-amd-gpu-on-ubuntu/
Create a custom config file /etc/X11/xorg.conf.d/20-radeon.conf and enter the following
Section "Device"
Identifier "Radeon"
Driver "radeon"
Option "TearFree" "on"
EndSection
Restart the X-server when done, and observe the desktop behaviour again.