Description of problem: After upgrade fedora-20 -> fedora-21 the module atl1c fails to detect my ethernet controller. The last known working kernel is 3.19.8-100.fc20.i686 Version-Release number of selected component (if applicable): kernel-4.0.5-200.fc21.i686 How reproducible: always Steps to Reproduce: 1. modprobe atl1c 2. ifconfig -a 3. Actual results: no eth0 interface found Expected results: (from 3.19.8) [ 19.269147] atl1c 0000:02:00.0: version 1.0.1.1-NAPI [ 21.225577] atl1c 0000:02:00.0: atl1c: eth0 NIC Link is Up<100 Mbps Full Duplex> eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 ether 50:e5:49:ce:fb:f0 txqueuelen 1000 (Ethernet) Additional info: 02:00.0 Ethernet controller: Qualcomm Atheros AR8151 v2.0 Gigabit Ethernet (rev c0) Subsystem: Gigabyte Technology Co., Ltd Device e000 Flags: bus master, fast devsel, latency 0, IRQ 28 Memory at f7c00000 (64-bit, non-prefetchable) [size=256K] I/O ports at e000 [size=128] Capabilities: [40] Power Management version 3 Capabilities: [48] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [58] Express Endpoint, MSI 00 Capabilities: [6c] Vital Product Data Capabilities: [100] Advanced Error Reporting Capabilities: [180] Device Serial Number ff-ce-fb-f0-50-e5-49-ff Kernel driver in use: atl1c Kernel modules: atl1c
kernel-4.0.5 produces the following error message: Jun 23 10:58:38 voipproxy2 kernel: [ 1.397542] atl1c 0000:02:00.0: MAC state machine can't be idle since disabled for 10ms second Jun 23 10:58:38 voipproxy2 kernel: [ 1.397624] atl1c: probe of 0000:02:00.0 failed with error -5
acpi=off kernel parameter fixes the problem. So probably it's a problem with ACPI subsystem.
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