Messages in this thread | | | Date | Sun, 09 Oct 2011 22:29:07 -0400 | From | Stefan Berger <> | Subject | Re: [tpmdd-devel] Linux 3.1-rc9 |
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On 10/09/2011 04:51 PM, Arkadiusz Miśkiewicz wrote: > On Wednesday 05 of October 2011, Linus Torvalds wrote: >> Another week, another -rc. > suspend to ram regression is annoying (still visible on rc9; > https://lkml.org/lkml/2011/9/24/76) but unfortunately maintainers are silent. > I tried -rc9 on my Lenovo W500 with that same TPM. I cannot reproduce the 'scheduling while atomic' problem you had reported earlier. I also could suspend / resume fine as long as I did the following:
- suspended with the tpm_tis driver as module in the kernel - once a suspend was done without the tpm_tis driver the subsequent suspends were all done without the tpm_tis driver
Once I had done a suspend/resume with the tpm_tis driver *not* in the kernel and then again a suspend with the tpm_tis driver in the kernel, it did not resume anymore. I believe previously (previous version of kernel and/or Fedora) it refused to even suspend. The reason why this doesn't work properly is that the driver has to send a command to the TPM upon suspend and the BIOS then sends the corresponding wakeup command.
Did you maybe previously suspend/resume without a tpm_tis driver and then try to suspend with it ?
Also, my Lenovo W500 shows particularly odd behavior when I switch from Windows to Linux. The first suspend with a Linux booted after Windows (with or without tpm_tis driver) does *not* resume (reboot required). A subsequently rebooted Linux makes the suspend/resume work fine.
Stefan
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