Dear Realtek Maintainers, I'm writing this mail for letting you know a bug regarding the kernel module `r8169`.
Downstream bug report (Ubuntu): https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1547151 Extended description: At school when I connect with my Ethernet cable to its network it doesn't see my cable, like it is disconnected. This also occurs with a different computer using the same kernel driver with the same LAN chip. The realtek r8168 works flawlessly but it disconnects randomly. I don't have problems in Windows (speed is 100Mbps), or with other computers using the same cable. After some tests it looks like the problem is only with gigabit networks using a megabit cable. WORKAROUND: using ethtool, `ethtool -s enp1s0f1 autoneg off speed 100 duplex full` /proc/cpuinfo: Linux version 4.5.0-040500rc4-generic (kernel@gomeisa) (gcc version 5.2.1 20151010 (Ubuntu 5.2.1-22ubuntu2) ) #201602141731 SMP Sun Feb 14 22:33:37 UTC 2016 Also tried with previous version of the kernel. cat /proc/modules: rfcomm 69632 0 - Live 0x0000000000000000 drbg 32768 1 - Live 0x0000000000000000 ansi_cprng 16384 0 - Live 0x0000000000000000 ctr 16384 1 - Live 0x0000000000000000 ccm 20480 1 - Live 0x0000000000000000 nvram 16384 0 - Live 0x0000000000000000 msr 16384 0 - Live 0x0000000000000000 binfmt_misc 20480 1 - Live 0x0000000000000000 bnep 20480 2 - Live 0x0000000000000000 ath3k 20480 0 - Live 0x0000000000000000 uvcvideo 90112 0 - Live 0x0000000000000000 videobuf2_vmalloc 16384 1 uvcvideo, Live 0x0000000000000000 videobuf2_memops 16384 1 videobuf2_vmalloc, Live 0x0000000000000000 videobuf2_v4l2 24576 1 uvcvideo, Live 0x0000000000000000 videobuf2_core 40960 2 uvcvideo,videobuf2_v4l2, Live 0x0000000000000000 videodev 176128 3 uvcvideo,videobuf2_v4l2,videobuf2_core, Live 0x0000000000000000 media 32768 2 uvcvideo,videodev, Live 0x0000000000000000 btusb 45056 0 - Live 0x0000000000000000 btrtl 16384 1 btusb, Live 0x0000000000000000 btbcm 16384 1 btusb, Live 0x0000000000000000 btintel 16384 1 btusb, Live 0x0000000000000000 bluetooth 520192 30 rfcomm,bnep,ath3k,btusb,btrtl,btbcm,btintel, Live 0x0000000000000000 nls_iso8859_1 16384 1 - Live 0x0000000000000000 acer_wmi 20480 0 - Live 0x0000000000000000 sparse_keymap 16384 1 acer_wmi, Live 0x0000000000000000 intel_rapl 20480 0 - Live 0x0000000000000000 x86_pkg_temp_thermal 16384 0 - Live 0x0000000000000000 intel_powerclamp 16384 0 - Live 0x0000000000000000 coretemp 16384 0 - Live 0x0000000000000000 f2fs 319488 1 - Live 0x0000000000000000 kvm_intel 184320 0 - Live 0x0000000000000000 kvm 557056 1 kvm_intel, Live 0x0000000000000000 irqbypass 16384 1 kvm, Live 0x0000000000000000 crct10dif_pclmul 16384 0 - Live 0x0000000000000000 arc4 16384 2 - Live 0x0000000000000000 crc32_pclmul 16384 0 - Live 0x0000000000000000 ghash_clmulni_intel 16384 0 - Live 0x0000000000000000 ath9k 147456 0 - Live 0x0000000000000000 aesni_intel 167936 2 - Live 0x0000000000000000 aes_x86_64 20480 1 aesni_intel, Live 0x0000000000000000 ath9k_common 36864 1 ath9k, Live 0x0000000000000000 lrw 16384 1 aesni_intel, Live 0x0000000000000000 ath9k_hw 466944 2 ath9k,ath9k_common, Live 0x0000000000000000 gf128mul 16384 1 lrw, Live 0x0000000000000000 glue_helper 16384 1 aesni_intel, Live 0x0000000000000000 ablk_helper 16384 1 aesni_intel, Live 0x0000000000000000 cryptd 20480 3 ghash_clmulni_intel,aesni_intel,ablk_helper, Live 0x0000000000000000 ath 32768 3 ath9k,ath9k_common,ath9k_hw, Live 0x0000000000000000 mac80211 733184 1 ath9k, Live 0x0000000000000000 cfg80211 565248 4 ath9k,ath9k_common,ath,mac80211, Live 0x0000000000000000 snd_soc_rt5640 114688 0 - Live 0x0000000000000000 joydev 20480 0 - Live 0x0000000000000000 input_leds 16384 0 - Live 0x0000000000000000 snd_soc_rl6231 16384 1 snd_soc_rt5640, Live 0x0000000000000000 snd_hda_codec_hdmi 53248 1 - Live 0x0000000000000000 snd_soc_core 229376 1 snd_soc_rt5640, Live 0x0000000000000000 serio_raw 16384 0 - Live 0x0000000000000000 snd_hda_codec_realtek 81920 1 - Live 0x0000000000000000 snd_hda_codec_generic 73728 1 snd_hda_codec_realtek, Live 0x0000000000000000 rtsx_pci_ms 20480 0 - Live 0x0000000000000000 lpc_ich 24576 0 - Live 0x0000000000000000 snd_compress 20480 1 snd_soc_core, Live 0x0000000000000000 ac97_bus 16384 1 snd_soc_core, Live 0x0000000000000000 snd_pcm_dmaengine 16384 1 snd_soc_core, Live 0x0000000000000000 memstick 20480 1 rtsx_pci_ms, Live 0x0000000000000000 snd_hda_intel 36864 5 - Live 0x0000000000000000 snd_hda_codec 135168 4 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_codec_generic,snd_hda_intel, Live 0x0000000000000000 snd_seq_midi 16384 0 - Live 0x0000000000000000 snd_seq_midi_event 16384 1 snd_seq_midi, Live 0x0000000000000000 snd_hda_core 73728 5 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_codec_generic,snd_hda_intel,snd_hda_codec, Live 0x0000000000000000 snd_hwdep 16384 1 snd_hda_codec, Live 0x0000000000000000 snd_rawmidi 32768 1 snd_seq_midi, Live 0x0000000000000000 snd_pcm 102400 7 snd_soc_rt5640,snd_hda_codec_hdmi,snd_soc_core,snd_pcm_dmaengine,snd_hda_intel,snd_hda_codec,snd_hda_core, Live 0x0000000000000000 mei_me 32768 0 - Live 0x0000000000000000 mei 98304 1 mei_me, Live 0x0000000000000000 shpchp 36864 0 - Live 0x0000000000000000 snd_seq 69632 2 snd_seq_midi,snd_seq_midi_event, Live 0x0000000000000000 snd_seq_device 16384 3 snd_seq_midi,snd_rawmidi,snd_seq, Live 0x0000000000000000 snd_timer 32768 2 snd_pcm,snd_seq, Live 0x0000000000000000 snd 81920 23 snd_hda_codec_hdmi,snd_soc_core,snd_hda_codec_realtek,snd_hda_codec_generic,snd_compress,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_rawmidi,snd_pcm,snd_seq,snd_seq_device,snd_timer, Live 0x0000000000000000 soundcore 16384 1 snd, Live 0x0000000000000000 8250_dw 16384 0 - Live 0x0000000000000000 dw_dmac 16384 0 - Live 0x0000000000000000 dw_dmac_core 24576 1 dw_dmac, Live 0x0000000000000000 i2c_designware_platform 16384 0 - Live 0x0000000000000000 wmi 20480 1 acer_wmi, Live 0x0000000000000000 snd_soc_sst_acpi 16384 0 - Live 0x0000000000000000 mac_hid 16384 0 - Live 0x0000000000000000 i2c_designware_core 20480 1 i2c_designware_platform, Live 0x0000000000000000 snd_soc_sst_match 16384 1 snd_soc_sst_acpi, Live 0x0000000000000000 spi_pxa2xx_platform 24576 0 - Live 0x0000000000000000 soc_button_array 16384 0 - Live 0x0000000000000000 parport_pc 32768 0 - Live 0x0000000000000000 ppdev 20480 0 - Live 0x0000000000000000 lp 20480 0 - Live 0x0000000000000000 parport 49152 3 parport_pc,ppdev,lp, Live 0x0000000000000000 autofs4 40960 2 - Live 0x0000000000000000 rtsx_pci_sdmmc 24576 0 - Live 0x0000000000000000 i915 1216512 22 - Live 0x0000000000000000 i2c_algo_bit 16384 1 i915, Live 0x0000000000000000 drm_kms_helper 147456 1 i915, Live 0x0000000000000000 psmouse 126976 0 - Live 0x0000000000000000 syscopyarea 16384 1 drm_kms_helper, Live 0x0000000000000000 sysfillrect 16384 1 drm_kms_helper, Live 0x0000000000000000 sysimgblt 16384 1 drm_kms_helper, Live 0x0000000000000000 fb_sys_fops 16384 1 drm_kms_helper, Live 0x0000000000000000 drm 364544 6 i915,drm_kms_helper, Live 0x0000000000000000 ahci 36864 4 - Live 0x0000000000000000 r8169 81920 0 - Live 0x0000000000000000 libahci 32768 1 ahci, Live 0x0000000000000000 rtsx_pci 53248 2 rtsx_pci_ms,rtsx_pci_sdmmc, Live 0x0000000000000000 mii 16384 1 r8169, Live 0x0000000000000000 sdhci_acpi 16384 0 - Live 0x0000000000000000 video 40960 2 acer_wmi,i915, Live 0x0000000000000000 sdhci 45056 1 sdhci_acpi, Live 0x0000000000000000 i2c_hid 20480 0 - Live 0x0000000000000000 hid 118784 1 i2c_hid, Live 0x0000000000000000 fjes 28672 0 - Live 0x0000000000000000 lspci -vvv 01:00.1 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 12) Subsystem: Acer Incorporated [ALI] Device 0866 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 46 Region 0: I/O ports at 4000 [size=256] Region 2: Memory at b3504000 (64-bit, non-prefetchable) [size=4K] Region 4: Memory at b3500000 (64-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA PME(D0+,D1+,D2+,D3hot+,D3cold+) Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME- Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+ Address: 00000000fee0f00c Data: 4162 Capabilities: [70] Express (v2) Endpoint, MSI 01 DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <512ns, L1 <64us ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset- DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported- RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop- MaxPayload 128 bytes, MaxReadReq 4096 bytes DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+ TransPend- LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s unlimited, L1 <64us ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp+ LnkCtl: ASPM L1 Enabled; RCB 64 bytes Disabled- CommClk+ ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt- LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt- DevCap2: Completion Timeout: Range ABCD, TimeoutDis+, LTR+, OBFF Via message/WAKE# DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1- EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest- Capabilities: [b0] MSI-X: Enable- Count=4 Masked- Vector table: BAR=4 offset=00000000 PBA: BAR=4 offset=00000800 Capabilities: [d0] Vital Product Data Unknown small resource type 00, will not decode more. Capabilities: [100 v2] Advanced Error Reporting UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol- UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol- UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol- CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+ CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+ AERCap: First Error Pointer: 00, GenCap+ CGenEn- ChkCap+ ChkEn- Capabilities: [160 v1] Device Serial Number 01-00-00-00-68-4c-e0-00 Capabilities: [170 v1] Latency Tolerance Reporting Max snoop latency: 3145728ns Max no snoop latency: 3145728ns Capabilities: [178 v1] L1 PM Substates L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+ L1_PM_Substates+ PortCommonModeRestoreTime=150us PortTPowerOnTime=150us Kernel driver in use: r8169 Attached devices: Host: scsi0 Channel: 00 Id: 00 Lun: 00 Vendor: ATA Model: Samsung SSD 850 Rev: 2B6Q Type: Direct-Access ANSI SCSI revision: 05 Host: scsi1 Channel: 00 Id: 00 Lun: 00 Vendor: ATA Model: ST500LT012-1DG14 Rev: SDM1 Type: Direct-Access ANSI SCSI revision: 05 cat /proc/ioports 0000-0cf7 : PCI Bus 0000:00 0000-001f : dma1 0020-0021 : pic1 0040-0043 : timer0 0050-0053 : timer1 0060-0060 : keyboard 0062-0062 : PNP0C09:00 0062-0062 : EC data 0064-0064 : keyboard 0066-0066 : PNP0C09:00 0066-0066 : EC cmd 0070-0077 : rtc0 0080-008f : dma page reg 00a0-00a1 : pic2 00c0-00df : dma2 00f0-00ff : fpu 0680-069f : pnp 00:00 0cf8-0cff : PCI conf1 0d00-ffff : PCI Bus 0000:00 164e-164f : pnp 00:00 1800-1803 : ACPI PM1a_EVT_BLK 1804-1805 : ACPI PM1a_CNT_BLK 1808-180b : ACPI PM_TMR 1810-1815 : ACPI CPU throttle 1830-1833 : iTCO_wdt.0.auto 1850-1850 : ACPI PM2_CNT_BLK 1854-1857 : pnp 00:02 1860-187f : iTCO_wdt.0.auto 1880-189f : ACPI GPE0_BLK 3000-3fff : PCI Bus 0000:03 3000-307f : 0000:03:00.0 4000-4fff : PCI Bus 0000:01 4000-40ff : 0000:01:00.1 4000-40ff : r8169 5000-503f : 0000:00:02.0 5040-505f : 0000:00:1f.3 5060-507f : 0000:00:1f.2 5060-507f : ahci 5080-5087 : 0000:00:1f.2 5080-5087 : ahci 5088-508f : 0000:00:1f.2 5088-508f : ahci 5090-5093 : 0000:00:1f.2 5090-5093 : ahci 5094-5097 : 0000:00:1f.2 5094-5097 : ahci fd60-fd63 : pnp 00:00 ffff-ffff : pnp 00:00 ffff-ffff : pnp 00:00 ffff-ffff : pnp 00:00 cat /proc/iomem 00000000-00000fff : reserved 00001000-0006efff : System RAM 0006f000-0006ffff : reserved 00070000-00087fff : System RAM 00088000-000bffff : reserved 000a0000-000bffff : PCI Bus 0000:00 000c0000-000c3fff : PCI Bus 0000:00 000c4000-000c7fff : PCI Bus 0000:00 000c8000-000cbfff : PCI Bus 0000:00 000cc000-000cffff : PCI Bus 0000:00 000d0000-000d3fff : PCI Bus 0000:00 000d4000-000d7fff : PCI Bus 0000:00 000d8000-000dbfff : PCI Bus 0000:00 000dc000-000dffff : PCI Bus 0000:00 000e0000-000e3fff : PCI Bus 0000:00 000e4000-000e7fff : PCI Bus 0000:00 000e8000-000ebfff : PCI Bus 0000:00 000ec000-000effff : PCI Bus 0000:00 000f0000-000fffff : PCI Bus 0000:00 000f0000-000fffff : System ROM 00100000-9551ffff : System RAM 02000000-02821eb9 : Kernel code 02821eba-02f44b3f : Kernel data 030c3000-03205fff : Kernel bss 95520000-95e1ffff : reserved 95e20000-9c6befff : System RAM 9c6bf000-9c8befff : reserved 9c8bf000-9cebefff : reserved 9cebf000-9cfbefff : ACPI Non-volatile Storage 9cfbf000-9cffefff : ACPI Tables 9cfff000-9cffffff : System RAM 9d000000-9f9fffff : reserved 9da00000-9f9fffff : Graphics Stolen Memory 9fa00000-feafffff : PCI Bus 0000:00 9fa10000-9fa1ffff : pnp 00:05 9fa20000-9fa20fff : pnp 00:05 a0000000-b1ffffff : PCI Bus 0000:03 a0000000-afffffff : 0000:03:00.0 b0000000-b1ffffff : 0000:03:00.0 b2000000-b2ffffff : PCI Bus 0000:03 b2000000-b2ffffff : 0000:03:00.0 b3000000-b33fffff : 0000:00:02.0 b3400000-b34fffff : PCI Bus 0000:02 b3400000-b347ffff : 0000:02:00.0 b3400000-b347ffff : ath9k b3480000-b348ffff : 0000:02:00.0 b3500000-b35fffff : PCI Bus 0000:01 b3500000-b3503fff : 0000:01:00.1 b3500000-b3503fff : r8169 b3504000-b3504fff : 0000:01:00.1 b3504000-b3504fff : r8169 b3505000-b3505fff : 0000:01:00.0 b3505000-b3505fff : rtsx_pci b3510000-b351ffff : 0000:01:00.0 b3600000-b360ffff : 0000:00:14.0 b3600000-b360ffff : xhci-hcd b3610000-b3613fff : 0000:00:03.0 b3610000-b3613fff : ICH HD audio b3614000-b3617fff : 0000:00:1b.0 b3614000-b3617fff : ICH HD audio b3618000-b361801f : 0000:00:16.0 b3618000-b361801f : mei_me b3619000-b36190ff : 0000:00:1f.3 b361b000-b361b7ff : 0000:00:1f.2 b361b000-b361b7ff : ahci b361c000-b361c3ff : 0000:00:1d.0 b361c000-b361c3ff : ehci_hcd c0000000-cfffffff : 0000:00:02.0 e0000000-efffffff : PCI MMCONFIG 0000 [bus 00-ff] e0000000-efffffff : reserved e0000000-efffffff : pnp 00:05 fe101000-fe112fff : reserved feb00000-feb0ffff : reserved fec00000-fec00fff : reserved fec00000-fec003ff : IOAPIC 0 fed00000-fee00fff : reserved fed00000-fed003ff : HPET 0 fed00000-fed003ff : PNP0103:00 fed10000-fed17fff : pnp 00:05 fed18000-fed18fff : pnp 00:05 fed19000-fed19fff : pnp 00:05 fed1c000-fed1ffff : pnp 00:05 fed1f410-fed1f414 : iTCO_wdt.0.auto fed20000-fed3ffff : pnp 00:05 fed90000-fed93fff : pnp 00:05 fee00000-fee00fff : Local APIC ff000000-ff000fff : pnp 00:05 ff010000-ffffffff : INT0800:00 ffa00000-ffffffff : reserved 100000000-25f5fffff : System RAM 25f600000-25fffffff : RAM buffer
