Messages in this thread | | | Date | Wed, 15 Mar 2023 12:50:19 +0530 | From | Srikar Dronamraju <> | Subject | igc driver causes suspend to fail if powersave is enabled |
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Hi,
On Lenovo ThinkPad P15 Gen 2i with I225-LM Ethernet card running Fedora 37 kernel 6.1.13-200.fc37.x86_64, running powertop --auto-tune causes suspend and reboot to fail. Once suspend fails, networking stops working even for wireless. Infact as a normal user, I cant even start a sudo session after trying to suspend.
Reboot/shutdown fails since Network-Manager cant be killed. (More below) The only option left is for the system to be hard-reboot.
I finally found that the problem was because enabling auto or powersave on ethernet card was causing this issue. i.e
echo 'auto' > '/sys/bus/pci/devices/0000:0b:00.0/power/control'
Pls do note, I was not using ethernet, I was just using wireless even before suspend.
lspci -v reports 0b:00.0 Ethernet controller: Intel Corporation Ethernet Controller I225-LM (rev 03) Subsystem: Lenovo Device 22d8 Flags: fast devsel, IRQ 16, IOMMU group 17 Memory at be300000 (32-bit, non-prefetchable) [size=1M] Memory at be400000 (32-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [50] MSI: Enable- Count=1/1 Maskable+ 64bit+ Capabilities: [70] MSI-X: Enable- Count=5 Masked- Capabilities: [a0] Express Endpoint, MSI 00 Capabilities: [100] Advanced Error Reporting Capabilities: [140] Device Serial Number 88-a4-c2-ff-ff-5f-09-88 Capabilities: [1c0] Latency Tolerance Reporting Capabilities: [1f0] Precision Time Measurement Capabilities: [1e0] L1 PM Substates Kernel modules: igc
When suspend fails, we see messages like this
kernel: Freezing of tasks failed after 20.001 seconds (3 tasks refusing to freeze, wq_busy=0): kernel: task:NetworkManager state:D stack:0 pid:2014 ppid:1 flags:0x00004006 kernel: Call Trace: kernel: <TASK> kernel: __schedule+0x35f/0x1360 kernel: ? asm_sysvec_reschedule_ipi+0x16/0x20 kernel: schedule+0x5d/0xe0 kernel: schedule_preempt_disabled+0x14/0x30 kernel: __mutex_lock.constprop.0+0x390/0x6e0 kernel: ? __cond_resched+0x1c/0x30 kernel: igc_resume+0xfc/0x1d0 [igc] kernel: ? pci_pm_restore_noirq+0xc0/0xc0 kernel: __rpm_callback+0x41/0x170 kernel: rpm_callback+0x35/0x70 kernel: ? pci_pm_restore_noirq+0xc0/0xc0 kernel: rpm_resume+0x5bb/0x800 kernel: __pm_runtime_resume+0x47/0x80 kernel: dev_ethtool+0x124/0x2eb0 kernel: ? avc_has_extended_perms+0x22a/0x520 kernel: ? inet_ioctl+0xd8/0x1e0 kernel: dev_ioctl+0x156/0x520 kernel: sock_do_ioctl+0xda/0x120 kernel: sock_ioctl+0xed/0x330 kernel: ? security_file_ioctl+0x39/0x60 kernel: __x64_sys_ioctl+0x8d/0xd0 kernel: do_syscall_64+0x58/0x80 kernel: ? __x64_sys_ioctl+0xa8/0xd0 kernel: ? syscall_exit_to_user_mode+0x17/0x40 kernel: ? do_syscall_64+0x67/0x80 kernel: ? do_syscall_64+0x67/0x80 kernel: ? do_syscall_64+0x67/0x80 kernel: ? do_syscall_64+0x67/0x80 kernel: entry_SYSCALL_64_after_hwframe+0x63/0xcd kernel: RIP: 0033:0x7ff964b93d6f kernel: RSP: 002b:00007ffc96c6f540 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 kernel: RAX: ffffffffffffffda RBX: 00005608c0ba8040 RCX: 00007ff964b93d6f kernel: RDX: 00007ffc96c6f640 RSI: 0000000000008946 RDI: 000000000000001e kernel: RBP: 00007ffc96c6f7c0 R08: 0000000000000000 R09: 0000000000000000 kernel: R10: 0000000000000021 R11: 0000000000000246 R12: 0000000000000000 kernel: R13: 00007ffc96c6f640 R14: 00007ffc96c6f620 R15: 00007ffc96c6f620 kernel: </TASK>
We have seen similar problems even with people running other distros like Arch Linux and RHEL 8 (which is 4.18 based)distros. So this is not distro specific or kernel specific too.
Even installing tlp package from https://linrunner.de/tlp/index.html causes similar issues.
-- Thanks and Regards Srikar Dronamraju
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