| Bug ID | 108832 |
|---|---|
| Summary | Cursor flickering on switching between cursor types |
| Product | DRI |
| Version | unspecified |
| Hardware | x86-64 (AMD64) |
| OS | Linux (All) |
| Status | NEW |
| Severity | normal |
| Priority | medium |
| Component | DRM/AMDgpu |
| Assignee | dri-devel@lists.freedesktop.org |
| Reporter | marlock9@gmail.com |
Copy of https://bugs.kde.org/show_bug.cgi?id=400097 Creating bug here because with help of KDE developer I have investigated it is amdgpu bug. For example, I'm moving cursor arrow on text. Before it turns to "I" for text selecting I clearly see the intermediate cursor texture (can't see what type is it) located right or left from current cursor position. Same when I moving cursor arrow to the border of screen to resize. It looks like glitch or flickering. It's lasting for about 2 years on different distributions. https://drive.google.com/file/d/1bV7okri0I95tkCOqo-6Z-axnN3-BXk9U/view?usp=sharing Above is link to a slo-mo video. You can clearly see what's happening when I'm moving cursor straight down from text: 1. "I" cursor 2. Arrow cursor appears 5 px left from "I" cursor 3. Arrow cursor leaps to the 15 px right-down diagonal On the monitor it looks like flickering jumping of cursor. amdgpu 18.0.1 libdrm-amdgpu1 2.4.91 linux 4.19.0 Radeon RX 570. So, kde developer said: "The issue is very likely in the video drivers, possibly not correctly syncronizing cursor position and cursor shape updates. I suggest to report it to the developers of your video drivers (your distribution might help to locate these)." Finally, I have some experiments with video driver settings and I have no issues with such options in 20-amdgpu.conf: Option "SWcursor" "true" Option "TearFree" "true" Truly said, only enabling SWcursor is enough for get rid of this bug but right after appears so much tearing (due to "KMS Pageflipping: disabled because of SWcursor" I suggest) so I needed to enable TearFree.
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