https://bugzilla.suse.com/show_bug.cgi?id=1211761 Bug ID: 1211761 Summary: vtty[1-6] nouveau framebuffers produce vast snow/raster on right and bottom border areas on the larger resolution of two displays, in the absence of both plymouth and video= on linu lines Classification: openSUSE Product: openSUSE Tumbleweed Version: Current Hardware: x86-64 URL: https://bugzilla.kernel.org/show_bug.cgi?id=217479 ; https://gitlab.freedesktop.org/drm/nouveau/-/issues/21 4 OS: Other Status: NEW Severity: Minor Priority: P5 - None Component: Kernel Assignee: kernel-bugs@opensuse.org Reporter: mrmazda@earthlink.net QA Contact: qa-bugs@suse.de Target Milestone: --- Found By: --- Blocker: --- Original Summary: vtty[1-6] nouveau framebuffers produce vast snow/raster on right and bottom border areas on the larger resolution of two displays, in the absence of both plymouth and video= on linu lines FTR: Upstream bugs: https://bugzilla.kernel.org/show_bug.cgi?id=217479 (includes most detail, w/ dmesg) https://gitlab.freedesktop.org/drm/nouveau/-/issues/214 To reproduce: 1-connect two unequal native resolution displays to a Tesla or Firmi GPU 2-don't have plymouth in use (I don't ever have it installed, so don't know whether it impacts) 3-don't include e.g. video=1440x900@60 directive on Grub's linu lines 4-boot TW 5-switch to a vtty, e.g. Ctrl-Alt-F3 Actual behavior: 1-Both displays utilize the resolution (same pixel grid) of the lower resolution display 2-Lower resolution display behaves as expected (light text on black background) 3-Higher resolution display uses same pixels as lower resolution display, with light text on black background, leaving right side and bottom raster instead of black Expected behavior: 1-Both displays utilize the resolution (same pixel grid) of the lower resolution display 2-Lower resolution display behaves as expected 3-Entire higher resolution display's background is black instead of portions in raster Workaround: add e.g. video=1440x900@60 to Grub's linu lines, which causes both displays to use the same nominal mode on the full display space. Occurs with TW 6.3.2, 6.2.12 & 6.2.4 kernel-default, and with 6.2.15 on Fedora 38 and Mageia 9. Does not occur with TW 6.1.12 kernel-default on NVidia, or with AMD Caicos (Terascale2) GPU, or with Intel Eaglelake GPU. Tested only on legacy booting (no UEFI support). Others might describe what I call "raster" as multicolored snow. nosimplefb=1 doesn't change anything. -- You are receiving this mail because: You are the assignee for the bug.