On Wed, 04 Jul 2012, Pavel Machek wrote: > When using nework interface (eth0), machine starts to behave > weird. Like... complete freeze, then poweroff, then it hangs on boot > (initializing ACPI) until I let it to cool down... and I'm not even > using gigabit speed. > > Did anyone see it? Any ideas? Should I attempt to open it and clean > the dust? Opening it up and cleaning things is always a good idea. Some intel boxes have the GbEth MAC inside the chipset, so it is also worth checking whether the thermal contact between heatsink and chipset is operating properly (or just replace the old thermal compounts with Artic Silver 5 or some other non-reactive, extremely high quality compound that is suitable for the rapid thermal cycles of laptops). > thinkpad_acpi: THERMAL EMERGENCY: a sensor reports something is extremely hot! > thinkpad_acpi: temperatures (Celsius): 88 49 N/A 82 40 N/A 40 N/A 52 61 N/A N/A N/A N/A N/A N/A My guess is that the 82°C reading on the fourth sensor is the problem, althouhg the CPU is also quite hot. That sensor is usually the GPU, but if your thinkpad has an integrated GPU, it is likely to have been used for the northbridge/chipset. It can also be a shortcircuity in the ethernet PHY (either the chip, or some of the analog auxiliary circuitry). This is repairable by an skilled surface-mount technician if he can get his hands in the schematics and source the replacement components, but if you ask Lenovo about it, they will want to replace your entire planar card (motherboard)... -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ ibm-acpi-devel mailing list ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel
