** Description changed: First boot after new install; Lubuntu 20.04 QA-test install + dell [optiplex] 755 (c2d-e6850, 5gb, amd/ati radeon rv516/x1300/x1550) NOTE: I re-used partitions, /dev/sda8 (/) was empty, but /dev/sda9 (/home) contained data. sddm wasn't used as DM before Lubuntu 20.04 installs, so I doubt it's related to a conf/config issue relating to sddm. Description: At first boot, I expect the cursor to move around the display without bright flahes of WHITE covering parts of the screen; that are very bright/distracting (somewhat strobe like). It only has this effect when the cursor/pointer is moved at the top of the display in what I'd describe as a panel. If the cursor is over the 'top' bar I get a strobbing effect as the cursor/pointer moves. Stop moving the mouse and the effect stops, move it off the top 'panel' and it's gone too. The 'flash' or 'strobe' like effects covers the whole screen, and occurs when the mouse is over - Session drop down box (not word itself, the Lubuntu drop-down bit) - Layout - US flag drop down - Pause/Reboot/Off icons top right. Elsewhere on the top 'panel' and there is no effect. It also occurs at the left arrow near the "Chris Guiver" password area, no issue if I move over white-grey-person-password area, just over the "<" to the left of that box. This could be a real possibly should a person react to 'flashes' (I'm thinking epilepsy but just a thought). The screen appears to flash all WHITE with a triangle pushing out from the left (reminds me of screen tearing). I haven't noticed this before on other boxes. On logging out, I get a brief strobe too before or as `ssdm` is drawn. - This could be filed again wrong package, I suspect it relates to xserver-xorg-video-radeon or something GPU related. `sudo lshw -C video` reports guiverc@d755-5-2004:~ $ sudo lshw -C video [sudo] password for guiverc: *-display:0 description: VGA compatible controller product: RV516 [Radeon X1300/X1550 Series] vendor: Advanced Micro Devices, Inc. [AMD/ATI] physical id: 0 bus info: pci@0000:01:00.0 version: 00 width: 64 bits clock: 33MHz capabilities: pm pciexpress msi vga_controller bus_master cap_list rom configuration: driver=radeon latency=0 resources: irq:16 memory:d0000000-dfffffff memory:fe9e0000-fe9effff ioport:dc00(size=256) memory:c0000-dffff *-display:1 UNCLAIMED description: Display controller product: RV516 [Radeon X1300/X1550 Series] (Secondary) vendor: Advanced Micro Devices, Inc. [AMD/ATI] physical id: 0.1 bus info: pci@0000:01:00.1 version: 00 width: 64 bits clock: 33MHz capabilities: pm pciexpress bus_master cap_list configuration: latency=0 resources: memory:fe9f0000-fe9fffff I did NOT expect two cards to be recognized? ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: sddm 0.18.1-1ubuntu2 ProcVersionSignature: Ubuntu 5.4.0-14.17-generic 5.4.18 Uname: Linux 5.4.0-14-generic x86_64 ApportVersion: 2.20.11-0ubuntu18 Architecture: amd64 CurrentDesktop: LXQt Date: Tue Mar 3 18:48:23 2020 InstallationDate: Installed on 2020-03-03 (0 days ago) InstallationMedia: Lubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200302) SourcePackage: sddm UpgradeStatus: No upgrade log present (probably fresh install)
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1865837 Title: Lubuntu 20.04 qa-test install; flashing at sddm greeter when mouse at top panel (pre-login) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sddm/+bug/1865837/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
