Lenovo X200, Intel 4500MHD, "White screen"

[destroyfx]

Hi, Booting Haiku with default setting get me to a black screen that progresively become white starting by the center of the screen. I think that the video driver work fine but try to use a unsupported mode.

Using the failsafe mode and "VESA" work fine.

The video card is Intel 4500MHD. Computer is Lenovo X200, normal screen resolution is 1280x800

Might be similar to #8001

[tojoko]

Hi,

should work, compare

​https://www.haiku-os.org/community/forum/thinkpad_x200_keymap

please. Maybe it's possible to find out which nightly exactly was used.

Otherwise, please provide a log.

boot -> put an empty fat32 formated stick on -> reboot (no power off) -> press space while bootin' -> enter debug handling -> safe debug output -> choose location -> publish it here

thanks

[destroyfx]

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[destroyfx]

Hi, I could not find the requested option to save to log in USB. But I was able to display it on the screen. Also in the same time I found out that the Video just doesn't initialise and that's probably the source of the screen that become white issue.

I took pictures of the log from the first time I saw about Intel Extreme up to the error about unable to initialise display.

[tojoko]

welcome back,

# 1 save log - you'll find it next to where to found the log (above or below).

Please be aware that it will only show up on a direct reboot after a failed boot. (No power off, no other os in between - otherwise all u see will be a blank line) (Advantage of a syslog is you got highlighting and can search through.)

# 2 What happens if and only if you blacklist intel_extrem on bootup?

(boot -> hit space -> debug handling -> at the end u find the blacklist option,

-> add-ons -> kernel -> drivers -> bin -> intel_extrem

# 3 I wonder if your boot medium is corrupt. If u have a cd drive, try to get a

rewritable cd, put the latest nightly on it and boot from cd. Advantage - it can't be altered that easily.

sincerely

[destroyfx]

#1 did not work as it do a complete boot (just corrupt withing that become black after a couples of secondes. No way to get to that menu.

#2 Blacklisting the video driver revert it back to VESA mode.

#3 Installation medium is fine, I have done an installation in another system using the same usb key without issue.

BUT I got the log by booting normally and press power once it's "booted" and Haiku do a proper shutdown (I did not have to press the full 7 seconds to get it to power off). After I booted into VESA mode and found the log in /var/log/syslog.old.

[destroyfx]

syslog

[moochris]

I have an issue now with my X200 also since the Intel graphics drivers were reworked to add support for new chipsets.

It boots into the max screenmode fine (1280 x 800), but in the Screens preflet, I am offered modes which are beyond this mode and are unsupported.

This causes issues with any game/emulator etc. that has a full screen option, as it always picks the wrong mode and I end up with the 'increasingly white screen' reported with this bug.

See attachment for modes that are offered. 1280 x 800 is the maximum supported for the display.

[moochris]

Unsupported modes offered in Screen preflet

[pulkomandy]

The driver/hardware is supposed to downscale those to the native screen mode ("panel fitting"). It seems this isn't working as expected. I happen to have an X200 around, so I can help testing debugging this if needed.

[destroyfx]

I booted the latest nightly and it just work so it can be closed.