You have been subscribed to a public bug: I've got a problem with some kernel modules (probably radeon) which cause screen problems. It occurs only on internal laptop screen. I found that problem is present in all kernels released after 2019-06-09 18:25. Last kernel which works corectly is v4.19.49 2019-06-09 10:04. v5.2-rc4 2019-06-09 18:25 has this bug and also v4.19.50 2019-06-11 13:06. So I think there are some changes in all kernel packages between hour 10:04 and 18:25 that day (2019-06-09) casue future problems.
This may be problem with radeon modules cause screen goes strange when console shows "fb: switching to radeondrmfb from VESA VGA" (I remove "quiet splash" from GRUB menu). In this video I show described problem -> https://player.vimeo.com/video/382017028 I've tested those kernels: *Works correctly: v4.19/ 2018-10-22 23:50 v4.19.49/ 2019-06-09 10:04 v5.0.1/ 2019-03-10 08:30 v5.0.7/ 2019-04-05 22:40 v5.0.21/ 2019-06-04 08:28 v5.1.6/ 2019-05-31 15:32 v5.1.8/ 2019-06-09 09:29 *Not working correctly v4.14.163/ 2020-01-09 12:29 v4.19.50/ 2019-06-11 13:06 v4.19.94/ 2020-01-09 12:42 v5.0.0-37/ 2019-11-14 12:06 v5.1.9/ 2019-06-11 12:29 v5.1.10/ 2019-06-15 11:30 v5.1.11/ 2019-06-17 19:36 v5.2-rc4/ 2019-06-09 18:25 v5.2-rc5/ 2019-06-16 20:26 Quick Hardware info: * Compal FL90 * CPU: Intel Core 2 Duo T7500 * GPU: AMD Rv620 * System Description: Ubuntu 18.04.3 LTS x64 (xubuntu) * Kernel (works OK): 5.1.8-050108-generic #201906090832 SMP Sun Jun 9 08:35:40 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: bot-comment -- Graphic driver (radeon) screen problem in kernels released after 2019-06-09 https://bugs.launchpad.net/bugs/1859352 You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
