Messages in this thread | | | Date | Mon, 29 Nov 2010 16:15:21 +0100 (CET) | From | Jiri Kosina <> | Subject | Re: [REGRESSION] Suspend fails because of TPM modules |
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On Mon, 29 Nov 2010, Jiri Kosina wrote:
> Hi, > > on my thinkpad x200s (and I have seen reports on different HW as well), > suspend fails when TPM modules are loaded. > > tpm_tis 00:0a: tpm_transmit: tpm_send: error -5 > legacy_suspend(): pnp_bus_suspend+0x0/0xa0 returns -5 > PM: Device 00:0a failed to suspend: error -5 > PM: Some devices failed to suspend > > Once tpm, tpm_bios, tpm_tis and tpm modules are unloaded, suspend/resume > works. > > This is a regression. It definitely worked on this very same hardware on > 2.6.34. Any kernel between .34 and .37 wasn't booted there, so I don't > have any data of that kind. > > I can try bisecting it, but if anyone sees immediately what the culprit > might be, that'd be helpful.
I just found out, that if I modprobe tpm_tis module with
itpm=1
parameter, the problem doesn't happen any more and suspend works fine.
This definitely wasn't needed on older kernels though, so I'd consider that still a regression.
Also, can't we make the module automatically detect the machines on which to apply the workaround? Let's say, based on DMI?
-- Jiri Kosina SUSE Labs, Novell Inc.
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