Messages in this thread | | | Subject | Re: A weird problem of Realtek r8168 after resume from S3 | From | Heiner Kallweit <> | Date | Fri, 14 Dec 2018 08:36:50 +0100 |
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On 14.12.2018 04:33, Chris Chiu wrote: > On Thu, Dec 13, 2018 at 10:20 AM Chris Chiu <chiu@endlessm.com> wrote: >> >> Hi, >> We got an acer laptop which has a problem with ethernet networking after >> resuming from S3. The ethernet is popular realtek r8168. The lspci shows as >> follows. >> 02:00.1 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. >> RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 12) >> Helpful would be a "dmesg | grep r8169", especially chip name + XID.
>> The problem is the ethernet is not accessible after resume. Pinging via >> ethernet always shows the response `Destination Host Unreachable`. However, >> the interesting part is, when I run tcpdump to monitor the problematic ethernet >> interface, the networking is back to alive. But it's dead again after >> I stop tcpdump. >> One more thing, if I ping the problematic machine from others, it achieves the >> same effect as above tcpdump. Maybe it's about the register setting for RX path? >> You could compare the register dumps (ethtool -d) before and after S3 sleep to find out whether there's a difference.
>> I tried the latest 4.20 rc version but the problem still there. I >> also tried some >> hw_reset or init thing in the resume path but no effect. Any >> suggestion for this? >> Thanks >> Did previous kernel versions work? If it's a regression, a bisect would be appreciated, because with the chip versions I've got I can't reproduce the issue.
>> Chris > > Gentle ping. Any additional information required? > > Chris > Heiner
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