Follow along with the video below to see how to install our site as a web app on your home screen.
Anmerkung: This feature may not be available in some browsers.
Das dort beschriebene Problem mit der APIC-Tabelle hat sich übrigens erledigt, ich habe mittlerweile ein BIOS fürs T500/W500, wo die geänderte APIC-Tabelle schon integriert ist. Man müsste also"nur noch" das Problem mit dem Hängebleiben nach dem Bootscreen bei "core multiprocessing" auf "enabled" lösen.
Wäre schön, wenn doch noch jemand einen Trick rausfindet, wie man diese letzte Hürde nehmen kann.
Siehe http://thinkpad-forum.de/threads/182146-T500-und-T400-Pinmod-für-FSB-1333oliveron schrieb:Aber wenn das T500 problemlos mit FSB1333Mhz läuft, gibt es dann Mods für FSB1066 CPUs @ 1333Mhz ?
(Also Dualcores, T9400 z.b., da käme man auf nette knapp 3,2Ghz)
Zumindest die W700-ACPI-Daten hatte ich damals von elektrokid von einem W700 mit Core2 Quad bekommen, aber das Problem ist wahrscheinlich im BIOS-Code, der diese bei jedem Bootvorgang erstellt und an das OS weiterreicht. Außerdem hat der Chinese, der die BIOS-Mods fürs T61 gemacht hat, schon mal ein paar Versuche angestellt, die ich alle getestet habe. Siehe Thread auf 51nb.com ab hier.oliveron schrieb:Und an die W700 Biosdaten kommt man nicht ? Chipsatz ist doch der gleiche und da gab es ja die Quads ab Werk.
Wenn es jemand mit diesen Infos nochmal selbst testen oder es woanders mit einem BIOS-Mod-Request probieren will, nur zu!el-sahef schrieb:Reply to #71 of highsun
I flashed the W500 BIOS 6F on a T500 motherboard (they have the same BIOS) and it did not brick but quadcores do still not work as they should. It is a step in the right direction anyway.
With the original lenovo BIOS (+ pin insulation and GTLREF2 connection) quadcores were recognized in the BIOS, but it was not able to finish boot process to a bootloader like grub2 or the windows bootloader, when "core multiprocessing" was set to "enabled". After the thinkpad boot screen and the LAN ROM message "press ctrl + s to configure", only a black screen was shown and the boot process was stuck.
When "core multiprocessing" was set to "disabled", booting to an operating system worked but only one core was usable. Table loading with grub2 never worked, even with supported dual core installed.
With the modded BIOS, table loading with grub2 is not necessary any more. Booting with a dual core and "core multiprocessing" set to "enabled" works but linux kernel complains about CPU 2 and 3 not responding (only CPU 0 and CPU 1), which is obvious. Booting to the linux desktop is successful despite this error message. But this shows that if 4 cores were available, they would be recognized.
Unfortunately, with a quadcore installed and "core multiprocessing" set to "enabled", booting to a bootloader is still not possible. It is the same situation as with the lenovo BIOS. After the thinkpad boot screen, no image is shown and the boot process does not continue. With the option set to "disabled", the boot process is continued to the bootloader, but booting an operating system fails with bluescreen (windows) or kernel panic (linux) because APIC table still shows 4 cores but "core multiprocessing" has been "disabled" completely.
I am sure that if the problem of stuck boot process with a quadcore installed could be solved, then quadcores would work in T500 / W500. But I suspect that it is very hard to find out the reason for this, so I do not have much hope regarding this issue.
Maybe there is a piece of code in the BIOS that is executed only when a quadcore is installed and was never debugged. The APIC table with places for up to 4 cores and the q9000 microcode in the original lenovo BIOS show that lenovo might have intended to support C2Q in W500 and T500 but at some point in design process they decided against it and never finished this.
Was man auch noch testen könnte wäre, was eine von diesen Debug-Karten für einen Post-Code anzeigt, wenn der Bootprozess hängen bleibt. Vielleicht könnte man damit die Ursache etwas eingrenzen.