Hi! > > > > When I press power button, it starts producing some noise (hdd > > > > spinning up), but power light goes pulsating, not on, and I stare at > > > > black screen. > > > > > > No beep? > > > > No beep. And no beep when I tried booting with RAM removed. > > According to: > <https://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles_pdf/x220_x220i_x220tablet_x220itablet_ug_en.pdf> > pulsating power-on LED indicates the sleep mode: > > "The power switch stays lit whenever the computer is on, blinks when the > computer is in sleep (standby) mode, and is off when the computer is > off." So... I disconnected CMOS battery and now I have two different blinking patterns. I googled a bit, and it seems it is symptom of some PROM failing. So likely Linux had nothing to do with this, and sorry for the noise. I have X230 now. Suspend/resume works without bricking it with (different?) 6.12-rc0. I hate the keyboard, and X230 came with bad battery and won't charge X220's battery (bad Lenovo!!), so I got another X220. If this one dies with blinking LED, I'll certainly let the world know. Best regards (and thanks for all the help), Pavel -- People of Russia, stop Putin before his war on Ukraine escalates.
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