** Attachment added: "sos report for 16.04.04 with 4.15 kernel tesing (no screen blur after enable x-window)" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1762940/+attachment/5120260/+files/sosreport-2288Hv5uefi16.04.44.15-20180417120113.tar.xz
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1762940 Title: Ubuntu 18.04 install screen becomes blur on Huawei server Status in linux package in Ubuntu: Triaged Status in install-package source package in Bionic: New Status in linux source package in Bionic: Triaged Bug description: For all(as I know) Huawei servers, the vga adapter are embed in the iBMC chips. Those server can install from ISO manually for 16.04.4 and screen display normally. But for 18.04 ( tested both for daily and final beta)version, the install screen is blur. One of tested server is Huawei 2855 v5, the certification link for 16.04 are https://certification.ubuntu.com/hardware/201707-25596/. Below are key difference of dmesg. It seems might related with DRM. 18.04 install screen is blur dmesg ... [ 2.039009] fb0: EFI VGA frame buffer device ... [ 4.178058] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [ 4.191435] [drm] No driver support for vblank timestamp query. [ 4.209338] checking generic (90000000 300000) vs hw (0 0) [ 4.209384] fbcon: hibmcdrmfb (fb1) is primary device [ 4.209385] fbcon: Remapping primary device, fb1, to tty 1-63 ... [ 5.357024] hibmc-drm 0000:07:00.0: fb1: hibmcdrmfb frame buffer device [ 5.380085] [drm] Initialized hibmc 1.0.0 20160828 for 0000:07:00.0 on minor 0 ... [ 5.636624] vga16fb: initializing [ 5.636627] vga16fb: mapped to 0x0000000048a7a1d2 [ 5.636630] checking generic (90000000 300000) vs hw (a0000 10000) [ 5.636676] fb2: VGA16 VGA frame buffer device ... 16.04.4 install screen is fine (no screen blur) dmesg ... [ 2.000419] fb0: EFI VGA frame buffer device .... [ 8.795065] vga16fb: initializing [ 8.795068] vga16fb: mapped to 0xffff8800000a0000 [ 8.795071] checking generic (98000000 300000) vs hw (a0000 10000) [ 8.795121] fb1: VGA16 VGA frame buffer device ... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1762940/+subscriptions -- 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
