Created attachment 521621 [details] some debug info collected in the error situation. All HW registers are FF or 00. Description of problem: After suspend/resume, sometimes the sky2 LAN chip in my Fujitsu Esprimo Mobile M9400 fails to recover. Last time this happened, all HW registers were either 00 or FF. Version-Release number of selected component (if applicable): 2.6.38.6-27.fc15.x86_64, sky2 1.28 How reproducible: Sometimes (occured 2x so far, estimated frequency ~1/30 cycles) Steps to Reproduce: 1. suspend/resume Actual results: [404256.145060] sky2 0000:04:00.0: eth0: disabling interface [404260.875063] PM: Entering mem sleep [404260.875092] Suspending console(s) (use no_console_suspend to debug) [404261.330055] PM: suspend of devices complete after 454.409 msecs [404261.514114] PM: late suspend of devices complete after 184.054 msecs [404261.514548] ACPI: Preparing to enter system sleep state S3 [404261.514698] PM: Saving platform NVS memory [404261.515344] Disabling non-boot CPUs ... [404261.520058] kvm: disabling virtualization on CPU1 [404261.520161] CPU 1 is now offline ... [404261.520704] PM: Restoring platform NVS memory [404261.748021] sky2 0000:04:00.0: Refused to change power state, currently in D3 (***) [404261.748032] sky2 0000:04:00.0: restoring config space at offset 0xf (was 0xffffffff, writing 0x10a) [404261.748038] sky2 0000:04:00.0: restoring config space at offset 0xe (was 0xffffffff, writing 0x0) ... [404294.102327] sky2 0000:04:00.0: eth0: phy I/O error [404294.102333] sky2 0000:04:00.0: eth0: phy I/O error The problem occured apparently at (***). Expected results: Successful suspend/resume Additional info:
2.6.38.6-27.fc15.x86_64 is fairly old at this point and F15 is going EOL. If you still see this with the 3.3 kernels in F16/F17 please open a new bug.