Opened 2 years ago

Last modified 23 months ago

#13765 new bug

Out of range mode with the LG Flatron LCD display

Reported by: Karvjorm Owned by: nobody
Priority: normal Milestone: Unscheduled
Component: Drivers/Graphics Version: R1/Development
Keywords: out of range display mode Cc:
Blocked By: Blocking:
Has a Patch: no Platform: x86

Description

I tried to install Haiku hrev51532-x86_gcc2_hybrid-anyboot.iso to an old Fujitsu Siemens SCA LEO 400 Desktop computer. The computer's processor is Intel Celeron and BIOS is Award Modular BIOS v6.00PG with the EnergyStar logo. The display of the desktop computer is LG's Flatron L1930SQ LCD.

I was able to boot this computer from the CD-ROM Drive, but the display was all the time showing me a 46.4kHz / 87Hz mode and "OUT OF RANGE" message. I tested this also with the hrev35928-x86_gcc2_hybrid-anyboot.img image and the behavior was the same.

Then I changed display to a very old HP L1520 display and I was able to boot Haiku hrev51532-x86_gcc2_hybrid-anyboot with two problems: Desktop was too large for the display (mode) and I got all the time an error message "PLEASE SETUP PC AT 1024X768 60HZ" at the topmost window.

After installation I started Haiku from the hard drive of the Fujitsu Siemens computer and all was the same with those two errors when I used the old HP display. Then I changed back to the LG Flatron display and got at first the same 46.4kHz / 87Hz message, but with the "POWER SAVING MODE" text. The display turned then black and after some seconds message changed to the previously shown "OUT OF RANGE" message.

Windows and Ubuntu can handle this OUT OF RANGE mode but Haiku cannot do it.

Attachments (4)

flatron-out-of-range.jpg (554.3 KB ) - added by Karvjorm 2 years ago.
LG's Flatron LCD display mode
topmost-message.jpg (384.3 KB ) - added by Karvjorm 2 years ago.
The topmost window when using my old HP display.
syslog (222.3 KB ) - added by Karvjorm 2 years ago.
I phase 3 the working display was black with a OUT OF RANGE message, so I had to boot system again with the working display.
Flatron-L1930SQ-modes.jpg (143.3 KB ) - added by Karvjorm 2 years ago.
Here is a page of the service manual from the address https://www.manualslib.com/manual/770966/Lg-L1730s-Fh.html#product-L1930SQ

Download all attachments as: .zip

Change History (12)

by Karvjorm, 2 years ago

Attachment: flatron-out-of-range.jpg added

LG's Flatron LCD display mode

comment:1 by Karvjorm, 2 years ago

Has a Patch: set

by Karvjorm, 2 years ago

Attachment: topmost-message.jpg added

The topmost window when using my old HP display.

comment:2 by waddlesplash, 2 years ago

Component: System/Boot LoaderDrivers/Graphics

Please do the following:

  1. delete the contents of the /var/log/ directory
  2. reboot into the monitor that does NOT work
  3. attach the monitor that DOES work
  4. grab the file /var/log/syslog and attach it to this ticket.

That will contain the graphics driver log, and hopefully it will clue us in as to why the wrong mode is being chosen here.

by Karvjorm, 2 years ago

Attachment: syslog added

I phase 3 the working display was black with a OUT OF RANGE message, so I had to boot system again with the working display.

comment:3 by Karvjorm, 2 years ago

Sorry misspelling: In phase 3 ...

comment:4 by Karvjorm, 2 years ago

I studied the menu items of the working display and found the following information:

OUT OF RANGE MODE INFO 640x 350 87Hz PRESET : 9 USER : 7

comment:5 by Karvjorm, 2 years ago

PRESET : 9 means 1024x768 75Hz and USER : 7 is 1024 x 768 70Hz. Both are the "highest" mode combinations that this display can provide.

comment:6 by waddlesplash, 2 years ago

KERN: video mode: 1280x1024x32

The kernel appears to have selected that mode, based on the DPMS information. Is that mode actually not supported by the monitor?

by Karvjorm, 2 years ago

Attachment: Flatron-L1930SQ-modes.jpg added

Here is a page of the service manual from the address https://www.manualslib.com/manual/770966/Lg-L1730s-Fh.html#product-L1930SQ

comment:7 by Karvjorm, 2 years ago

Sorry, previous link was to a wrong manual, the correct link is https://www.manualslib.com/download/846737/Lg-Flatron-L1930sq.html

comment:8 by pulkomandy, 23 months ago

Has a Patch: unset
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