URL: <http://savannah.gnu.org/bugs/?54511>
Summary: grub2.02 fails to start VBE videomodes on Intel Atom Z36xxx/Z37xxx Series Graphics & Display in CSM mode Project: GNU GRUB Submitted by: nickel Submitted on: Tue 14 Aug 2018 07:19:02 AM UTC Category: User Interface Severity: Major Priority: 5 - Normal Item Group: Hardware-specific Status: None Privacy: Public Assigned to: None Originator Name: Nikolai Originator Email: nic...@altlinux.org Open/Closed: Open Discussion Lock: Any Release: Release: 2.02 Reproducibility: Every Time Planned Release: None _______________________________________________________ Details: Nettop PC based on Intel Celeron J1800 CPU provides CSM (compatibility support mode). GRUB 2.02 VBE video driver module fails to init any resolution videomode (800x600 in particular) in above mentioned mode. VGA module falls back to 640x480x8, and background picture is poorly displayed. Only videotest 640x480 shows test picture when only VGA module loaded. In the same time extlinux boot loader starts VBE mode properly (please refer to attached pictures). Issue may be similar to earlier reported bug #50911 <https://savannah.gnu.org/bugs/index.php?50911> lspci output for VGA adapter: 00:02.0 VGA compatible controller: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Graphics & Display (rev 0e) xrandr output: Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192 VGA-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 521mm x 293mm 1920x1080 60.00*+ 1680x1050 59.95 1280x1024 75.02 60.02 1440x900 59.89 1280x960 60.00 1280x720 60.00 1024x768 75.03 70.07 60.00 832x624 74.55 800x600 72.19 75.00 60.32 56.25 640x480 75.00 72.81 66.67 59.94 720x400 70.08 DP-1 disconnected (normal left inverted right x axis y axis) HDMI-1 disconnected (normal left inverted right x axis y axis) DP-2 disconnected (normal left inverted right x axis y axis) HDMI-2 disconnected (normal left inverted right x axis y axis) _______________________________________________________ File Attachments: ------------------------------------------------------- Date: Tue 14 Aug 2018 07:19:02 AM UTC Name: cpuinfo_output Size: 2KiB By: nickel <http://savannah.gnu.org/bugs/download.php?file_id=44777> ------------------------------------------------------- Date: Tue 14 Aug 2018 07:19:02 AM UTC Name: grub-2.02-menu.jpg Size: 96KiB By: nickel <http://savannah.gnu.org/bugs/download.php?file_id=44778> ------------------------------------------------------- Date: Tue 14 Aug 2018 07:19:02 AM UTC Name: extlinux-menu.jpg Size: 96KiB By: nickel <http://savannah.gnu.org/bugs/download.php?file_id=44779> ------------------------------------------------------- Date: Tue 14 Aug 2018 07:19:02 AM UTC Name: gfxmode_800x600.jpg Size: 138KiB By: nickel <http://savannah.gnu.org/bugs/download.php?file_id=44780> _______________________________________________________ Reply to this item at: <http://savannah.gnu.org/bugs/?54511> _______________________________________________ Message sent via Savannah https://savannah.gnu.org/ _______________________________________________ Bug-grub mailing list Bug-grub@gnu.org https://lists.gnu.org/mailman/listinfo/bug-grub