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@@ -214,6 +214,21 @@ the target (`target$`): 6. Try to reproduce the kernel panic. +Machine check exceptions on some Montevina (Penryn CPU) laptops +--------------------------------------------------------------- + +Some GM45 laptops have been freezing or experiencing a kernel panic +(blinking caps lock LED and totaly unresponsive machine, sometimes followed +by an automatic reboot within 30 seconds). +We do not know what the problem(s) is(are), but a CPU microcode +update in some cases prevents this from happening again. +See the following bug reports for more info: + +- [T400 Machine check: Processor context corrupt](https://notabug.org/libreboot/libreboot/issues/493) +- [X200 Machine check: Processor context corrupt](https://notabug.org/libreboot/libreboot/issues/289) + +- [Unrelated, RAM incompatibility and suspend-to-ram issues on X200](https://libreboot.org/docs/hardware/x200.html#ram_s3_microcode) + Hardware compatibility ====================== |