https://www.thinkwiki.org/w/api.php?action=feedcontributions&feedformat=atom&user=Fschmitt 2026-04-17T18:12:29Z User contributions MediaWiki 1.31.12 https://www.thinkwiki.org/w/index.php?title=Problem_with_video_output_switching&diff=22538 2006-05-30T09:55:05Z

<p>Fschmitt: /* Problems with ATI chipsets */</p> <hr /> <div>==Affected Models==<br /> *ThinkPad {{T40}}, {{T40p}}, {{T41}}, {{T41p}}, {{T42}}, {{T42p}}, {{T43}}, {{T43p}}<br /> *ThinkPad {{X23}}, {{X41}}<br /> <br /> ==Problem Description==<br /> ===Problems with Intel chipsets===<br /> Disabling the internal LCD (e.g. when using an external Monitor) doesn't seem to work reliably.<br /> <br /> * i810switch doesn't have any effect. After disabling the LCD it is still on (but the status display of i810switch claims that is is switched off).<br /> <br /> * i855crt doesn't seem to allow to change the state of the internal LCD.<br /> <br /> * With [[ibm-acpi]], {{cmdroot|echo lcd_disable &gt;/proc/acpi/ibm/video}} works, but {{cmdroot|echo lcd_enable &gt;/proc/acpi/ibm/video}} doesn't work - so one can't enable it anymore after disabling it. (the strange thing is that when switching to a console with {{key|ctrl}}{{key|alt}}{{key|F1}} the LCD display is used for it, so there must be some way to enable it but I can't find out how to control this in X). I've tried this with version 0.8 and version 0.11 of [[ibm-acpi]].<br /> <br /> ===Problems with ATI chipsets===<br /> *It is a [http://bugs.freedesktop.org/show_bug.cgi?id=2000 known issue] of xorgs radeon driver that {{key|Fn}}{{key|F7}} doesn't work.<br /> <br /> You might try the following: Hit Ctrl+Alt+F1 to switch to a console, hit Fn+F7 to switch video, hit Ctrl+Alt+F7 to switch back to X.<br /> <br /> ==Related Links==<br /> *https://bugs.freedesktop.org/show_bug.cgi?id=2000<br /> <br /> ==Solutions==<br /> None (yet).</div>

Fschmitt