[Bug 1767654] Re: [Intel Braswell] Cursor gets stuck on left side of the screen
I'll also add that this problem is still present in kernel 5.8 (no matter if you use "modesetting" or "intel" driver for the Braswell GPU. My current setup: System:Kernel: 5.4.0-58-generic x86_64 bits: 64 compiler: gcc v: 9.3.0 Desktop: Cinnamon 4.6.7 wm: muffin dm: LightDM Distro: Linux Mint 20 Ulyana base: Ubuntu 20.04 focal Machine: Type: Desktop System: ASUSTeK product: E410 v: 0703 serial: Mobo: ASUSTeK model: E410 v: Rev 1.xx serial: UEFI: ASUSTeK (Licensed from AMI) v: 0703 date: 07/07/2017 CPU: Topology: Quad Core model: Intel Celeron N3150 bits: 64 type: MCP arch: Airmont rev: 3 L2 cache: 1024 KiB flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 12800 Speed: 1008 MHz min/max: 480/2080 MHz Core speeds (MHz): 1: 721 2: 1179 3: 2081 4: 2080 Graphics: Device-1: Intel Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Integrated Graphics driver: i915 v: kernel bus ID: 00:02.0 chip ID: 8086:22b1 Display: x11 server: X.Org 1.20.8 driver: modesetting unloaded: fbdev,vesa resolution: 1920x1080~60Hz OpenGL: renderer: Mesa DRI Intel HD Graphics 400 (BSW) v: 4.6 Mesa 21.0.0-devel (git-7de1468 2021-01-01 focal-oibaf-ppa) compat-v: 3.0 direct render: Yes -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1767654 Title: [Intel Braswell] Cursor gets stuck on left side of the screen To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1767654/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1767654] Re: [Intel Braswell] Cursor gets stuck on left side of the screen
@tonypanduru I'd like to share a slightly improved workaround on this for those still dealing with the issue. The core problem seems to be that the mouse cursor can go into a negative X position by one pixel when moved to the far left of the screen. With either the now obsolete intel proprietary driver or the current intel modesetting driver, this causes issues (exact symptoms are different for each, but seem to be from the same root cause). My previous workaround got by this by scaling the entire desktop to 99.99% of its former size. This prevented the cursor from getting to the -1 X position, but came at a cost of lost performance and some screen tearing in videos and games. This was due to a bilinear filter being applied by xrandr to the whole desktop to accommodate the slight re- size. The following command avoids this issue and instead merely shifts the entire desktop right one pixel. It still works around the issue, but seems to avoid the overhead of resizing the whole desktop (which preserves display integrity and performance). xrandr --output HDMI-3 --transform 1,0,-1,0,1,0,0,0,1 It would be nice to get a root cause fix for this, but this workaround seems to do the trick with very little downside. As before, replace the "HDMI-3" with the name of your active display (found by running xrandr with no options) and place the command in your ~/.xprofile (or make a startup app entry in your desktop manager). -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1767654 Title: [Intel Braswell] Cursor gets stuck on left side of the screen To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1767654/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1767654] Re: [Intel Braswell] Cursor gets stuck on left side of the screen
I can confirm that the problem is present with both the intel and the modesetting driver on Braswell systems. The exact symptoms differ for each, but in both cases it is triggered when the mouse touches the left limit of the screen. With modesetting, it seems to "stick" until you move the mouse away from the left side. With intel, touching the left side starts a flickering that persists even after you move the mouse away. Mainly, just the mouse cursor flickers, but the whole screen will flicker when doing graphics intensive tasks like fullscreen video or gaming. Sometimes, the mouse flicker can be so bad it becomes nearly invisible. I have made full report on the bug report thread opened by Salvatore. The good news is I found a workaround, you can use xrandr to scale the display to 0.x0. and this prevents the issues in both intel and modesetting. This can be done in your .xprofile in your home directory to take effect at login. It does come with a slight performance penalty, but it's preferable to the glitching that happens otherwise (at least until someone fixes the regression). xrandr --output HDMI-3 --mode 1920x1080 --scale 0.x0. Replace "HDMI-3" with the name of your display (can be found by running xrandr with no options). -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1767654 Title: [Intel Braswell] Cursor gets stuck on left side of the screen To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1767654/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
