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Date:      Fri, 21 Dec 2018 16:39:14 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 202309] [uefi] smashed screen on HP Probook 430 G1 with UEFI
Message-ID:  <bug-202309-227-dcPVbHdlMp@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-202309-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-202309-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D202309

Oliver Pinter <op@freebsd.org> changed:

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                 CC|                            |Ray"@FreeBSD.org,
                   |                            |dumbbell@FreeBSD.org,
                   |                            |marcel@FreeBSD.org
           See Also|                            |https://bugs.freebsd.org/bu
                   |                            |gzilla/show_bug.cgi?id=3D1=
940
                   |                            |63
                 CC|Ray"@FreeBSD.org            |ray@FreeBSD.org

Marcel Moolenaar <marcel@FreeBSD.org> changed:

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             Status|New                         |Open
                 CC|ray@FreeBSD.org             |
           Assignee|freebsd-bugs@FreeBSD.org    |marcel@FreeBSD.org
             Status|Open                        |In Progress

Douglas King <douglasking215@gmail.com> changed:

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                 CC|                            |douglasking215@gmail.com

Ed Maste <emaste@freebsd.org> changed:

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                 CC|                            |emaste@freebsd.org

Marcel Moolenaar <marcel@FreeBSD.org> changed:

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           Assignee|marcel@FreeBSD.org          |freebsd-bugs@FreeBSD.org

Vaclav Mocek <next.little.owl@gmail.com> changed:

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                 CC|                            |next.little.owl@gmail.com

Alexey Dokuchaev <danfe@FreeBSD.org> changed:

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                 CC|                            |danfe@FreeBSD.org

bel3atar@aol.com changed:

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                 CC|                            |bel3atar@aol.com

Eitan Adler <eadler@FreeBSD.org> changed:

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             Status|In Progress                 |Open

Mark Linimon <linimon@FreeBSD.org> changed:

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           Assignee|bugs@FreeBSD.org            |linimon@FreeBSD.org

Jean-S=C3=A9bastien P=C3=A9dron <dumbbell@FreeBSD.org> changed:

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                 CC|dumbbell@FreeBSD.org        |

--- Comment #1 from Marcel Moolenaar <marcel@FreeBSD.org> ---
If I can read the screen correctly, it looks like the resolution is 1366x76=
8,
with a stride of 1366 and a color depth of 32 bits per pixel (or 4 bytes per
pixel).

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 w=
ould
do this.

Have you tried updating the firmware?

--- Comment #2 from Oliver Pinter <op@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@FreeBSD.org> ---
Created attachment 160509
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D160509&action=
=3Dedit
loader with 'gop' command

--- Comment #4 from Marcel Moolenaar <marcel@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
difference?

--- Comment #5 from Douglas King <douglasking215@gmail.com> ---
Created attachment 162834
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D162834&action=
=3Dedit
BIOS information

dmidecode output

--- Comment #6 from Douglas King <douglasking215@gmail.com> ---
Created attachment 162835
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D162835&action=
=3Dedit
Dmidecode output

--- Comment #7 from Douglas King <douglasking215@gmail.com> ---
I am having the same issue trying to install on an HP Elitebook 2540p.
The error happens at the same point shown in the video except the whole out=
put
is "squished" in the top 5-10% of the disply.
The display changes with user interaction but none of it is viewable.
The text from the boot process remains unaffected.=20
Booting without EFI freezes slightly earlier in the boot.

'gop' only has one mode listed.

--- Comment #8 from Oliver Pinter <op@freebsd.org> ---
The issue still exists and the same on most recent stable from 2016.01.18.

--- Comment #9 from Vaclav Mocek <next.little.owl@gmail.com> ---
I have the same issue with an older Lenovo Ideapad S205, where during the b=
oot
the screen is garbled. I tested the snapshot 10.2-r293802 and 11-r293801, b=
oth
are failing. I had the same issue with Linux three years back - the video m=
ode
was not set correctly even in Grub2 and workaround was to use the option
gfxmode, which overwrites the detected values. So, I suspect that the UEFI =
GOP
provides partly incorrect information and the efifb is not set correctly.

Unfortunately, I have no clue how to debug these thing on FreeBSD, any hint
would be welcomed.

--- Comment #10 from Vaclav Mocek <next.little.owl@gmail.com> ---
I have the same issue with an older Lenovo Ideapad S205, where during the b=
oot
the screen is garbled. I tested the snapshot 10.2-r293802 and 11-r293801, b=
oth
are failing. I had the same issue with Linux three years back - the video m=
ode
was not set correctly even in Grub2 and workaround was to use the option
gfxmode, which overwrites the detected values. So, I suspect that the UEFI =
GOP
provides partly incorrect information and the efifb is not set correctly.

Unfortunately, I have no clue how to debug these thing on FreeBSD, any hint
would be welcomed.

--- Comment #11 from Alexey Dokuchaev <danfe@FreeBSD.org> ---
Exactly the same problem is observed on HP ProBook 645 G1 against recent
-CURRENT (r304729).  In CSM mode, "gop get" returns only one mode, with much
larger frame buffer size compared to native (non-CSM) boot for some reason:

> OK gop get
> mode 0: 1024x768x32, stride=3D1024
>     frame buffer: address=3Dc0000000, size=3D1000000
>     color mask: R=3D00ff0000, G=3D0000ff00, B=3D000000ff
In CSM mode, laptop initializes itself with 1024x768 screen resolution and
FreeBSD boots fine.

Now, in native (non-CSM) mode, four modes are reported:

> OK gop get
> mode 0: 1366x768x32, stride=3D1366
>     frame buffer: address=3Dc0000000, size=3D420000
>     color mask: R=3D00ff0000, G=3D0000ff00, B=3D000000ff
>=20
> OK gop list
> mode 0: 1366x768x32, stride=3D1366
> mode 1: 800x600x32, stride=3D800
> mode 2: 1024x768x32, stride=3D1024
> mode 3: 640x480x32, stride=3D640
However, only modes 2 and 3 allow to have normal (non-smashed) console.=20
Booting in other modes looks exactly like on the video clip attached earlie=
r.

--- Comment #12 from Alexey Dokuchaev <danfe@FreeBSD.org> ---
Tonight I've played with it a bit more.

1. I've discovered that in Linux Matthew Garrett had patched EFI framebuffer
size calculation instead of trusting what firmware provides back in 2012
(https://lkml.org/lkml/2012/7/27/407).  I've made a similar change to our c=
ode,
but it didn't fix the problem:

> efifb->fb_size =3D efifb->fb_height * efifb->fb_stride * 4;
Side note: Linux is setting their si->lfb_linelength =3D pixels_per_scan_li=
ne *
4; while we use it as is: efifb->fb_stride =3D info->PixelsPerScanLine; I w=
onder
why...

2. I've tried booting rather old ubuntu-11.04-desktop-amd64.iso in native U=
EFI
mode and got very similar screen distortion in GRUB; it didn't boot further=
 and
I don't have a more recent Ubuntu version at my hands at the moment.

3. OS X Mavericks on HP Probook/Elitebook laptops guide
(http://www.insanelymac.com/forum/topic/293842-guide-mavericks-on-hp-proboo=
kelitebook-laptops-with-clover-uefi-bootloader/)
also mentions this problem under "Known issues" as item number one: "Distor=
ted
bootscreen with 7-series laptops using 1366x768 display + UEFI native (with=
out
CSM) setting. Changing Clover resolution to 1024x768 can fix it."

At this point I tend to believe that this is a problem on HP side, and I'm =
not
sure if it can be efficiently mitigated other than sticking to 1024x768 (mo=
de
2).  Any further ideas are certainly welcome.

--- Comment #13 from Kubilay Kocak <koobs@FreeBSD.org> ---
Test comment

--- Comment #14 from bel3atar@aol.com ---
I have the same problem with an HP Elitebook 8470p

--- Comment #15 from Eitan Adler <eadler@FreeBSD.org> ---
For bugs matching the following conditions:
- Status =3D=3D In Progress
- Assignee =3D=3D "bugs@FreeBSD.org"
- Last Modified Year <=3D 2017

Do
- Set Status to "Open"

--- Comment #16 from Mark Linimon <linimon@FreeBSD.org> ---
Is this still a problem as of 12-ALPHA?

--- Comment #17 from Alexey Dokuchaev <danfe@FreeBSD.org> ---
Yes, it is still a problem.  Current work-around is to add "gop set 2" to
/boot/loader.rc.local (this forces 1024x768).  The problem is not very
important because once KMS modules are loaded, the screen switches to native
resolution.

--=20
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