https://bugzilla.novell.com/show_bug.cgi?id=727628 https://bugzilla.novell.com/show_bug.cgi?id=727628#c0 Summary: IBM Thinkpad T420: screen black in agrressive powersave mode / unhandled ACPI-request Classification: openSUSE Product: openSUSE 11.4 Version: Final Platform: x86-64 OS/Version: openSUSE 11.4 Status: NEW Severity: Major Priority: P5 - None Component: Basesystem AssignedTo: bnc-team-screening@forge.provo.novell.com ReportedBy: p.heinlein@heinlein-support.de QAContact: qa@suse.de Found By: --- Blocker: --- I'm using a new Thinkpad T420 laptop with SandyBridge with OpenSUSE 11.4 and OpenSUSE ThumbleWeed with KDE. If the battery is empty and the system is in aggressive powersave mode, the screen becomes black if I plug in the power cable. Looks like the system is still working, but the screen is shut down. Even when changing to tty1 or when changing back to tty7/KDE, the screen remains black and unusable. With dmesg I saw this errors: [ 300.752879] [Hardware Error]: Machine check events logged [ 307.790734] thinkpad_acpi: unknown possible thermal alarm or keyboard event received [ 307.790760] thinkpad_acpi: unhandled HKEY event 0x6040 [ 307.790762] thinkpad_acpi: please report the conditions when this event happened to ibm-acpi-devel@lists.sourceforge.net [ 307.792318] thinkpad_acpi: EC reports that Thermal Table has changed => Major bug, because it's not possible to work on the laptop if agressive powersave mode has already been reached. The system has to be rebooted after the power cable has been attached. Data loss is possible! I'll alert this to ibm-acpi-devel@lists.sourceforge.net. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.