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List: haiku-bugs
Subject: [haiku-bugs] Re: [Haiku] #16661: Intel 915GM video mode switching leaves laptop with black screen wi
From: "Haiku" <trac () haiku-os ! org>
Date: 2021-01-27 1:22:48
Message-ID: 059.37ab41de100c93819c2d68d9a5645627 () haiku-os ! org
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#16661: Intel 915GM video mode switching leaves laptop with black screen wi=
th both
native and VESA drivers.
-------------------------------------------------+-------------------------
Reporter: leppy232 | Owner: pulkomandy
Type: bug | Status: new
Priority: normal | Milestone: Unscheduled
Component: Drivers/Graphics/intel_extreme/9xx | Version: R1/beta2
Resolution: | Keywords:
Blocked By: | Blocking:
Platform: x86 |
-------------------------------------------------+-------------------------
Comment (by leppy232):
Replying to [comment:5 pulkomandy]:
> There is some confusion here. The shift-control-alt-escape does not
switch to the VESA driver. It just switches to a safe video mode (probably
1024x768 or 800x600 with 16bit or 256 colors? I could not find where this
is implemented in the code...).
>
> The "failsafe graphics driver" option in the boot menu does switch to
the VESA driver, which is a completely different thing.
>
> If you're having graphics glitches to start with, and both of the
drivers fail in some way, it sounds a bit worrying. Are you sure the
hardware is ok? Does it work with other OS?
>
> For further investigation, please provide syslogs for the following
situations (make sure to delete the syslog from /system/var/log/syslog
between each test to have results for just oen boot in each):
> - Booting with the failsafe graphics driver enabled
> - Booting normally, then changing the video mode
Sorry for taking so long, I kinda forgot about this. I have three logs,
one VESA and two different methods of changing the video mode (the normal
way and the keyboard shortcut). VESA failsafe actually worked, I don't
know why it failed on me that time. I'm guessing it tried to run at
800x600.
As for other OSes, Windows NT (both 3.51 and 5.x) run just fine with both
their native drivers and custom ones (VBEMP and the native 915GM drivers
resp.) and Linux is the same. Both handle multiple resolutions just fine.
ReactOS doesn't, but that's just it not liking the chip, it's a known
issue for it; it runs with generic VESA drivers but honestly pretty
terribly. I haven't tried 9x, Rhapsody, or OS/2, but I feel like NT and
Linux are enough to say that the chip itself is alright.
-- =
Ticket URL: <https://dev.haiku-os.org/ticket/16661#comment:6>
Haiku <https://dev.haiku-os.org>
The Haiku operating system.
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