[Bug 202309] [uefi] smashed screen on HP Probook 430 G1 with UEFI

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Fri Nov 6 05:33:29 UTC 2015


Oliver Pinter <op at freebsd.org> changed:

           What    |Removed                     |Added
                 CC|                            |Ray"@FreeBSD.org,
                   |                            |dumbbell at FreeBSD.org,
                   |                            |marcel at FreeBSD.org
           See Also|                            |https://bugs.freebsd.org/bu
                   |                            |gzilla/show_bug.cgi?id=1940
                   |                            |63
                 CC|Ray"@FreeBSD.org            |ray at FreeBSD.org

Marcel Moolenaar <marcel at FreeBSD.org> changed:

           What    |Removed                     |Added
             Status|New                         |Open
                 CC|ray at FreeBSD.org             |
           Assignee|freebsd-bugs at FreeBSD.org    |marcel at FreeBSD.org
             Status|Open                        |In Progress

Douglas King <douglasking215 at gmail.com> changed:

           What    |Removed                     |Added
                 CC|                            |douglasking215 at gmail.com

--- Comment #1 from Marcel Moolenaar <marcel at FreeBSD.org> ---
If I can read the screen correctly, it looks like the resolution is 1366x768,
with a stride of 1366 and a color depth of 32 bits per pixel (or 4 bytes per

The console output seems to be using a stride that's just wrong. Since the
stride is coming from UEFI, it's hard to think of a reason why the kernel would
do this.

Have you tried updating the firmware?

--- Comment #2 from Oliver Pinter <op at freebsd.org> ---
Yes, today I updated to latest bios from HP, but the issue still exists.

How could I extract these information without serial port or change the
settings in loader or kernel?

--- Comment #3 from Marcel Moolenaar <marcel at FreeBSD.org> ---
Created attachment 160509
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=160509&action=edit
loader with 'gop' command

--- Comment #4 from Marcel Moolenaar <marcel at FreeBSD.org> ---
(In reply to Oliver Pinter from comment #2)

I committed revision 287299 (-current), that adds a 'gop' command to the
loader. I attached a pre-compiled EFI loader with this command to this PR.

Can you run 'gop get' and 'gop list' and add the output to this PR?

Also: can you try different modes (if possible) and see if that makes a

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