Most of the times, the transmission is stable, but
there are 3 times bad things pop up. 'L' is shown for one time
after running for some time. The following warning is shown
twice.
UHD Warning:
x300_dac_ctrl: front-end sync failed. unexpected FIFO
depth [0x7]
thread[thread-per-block[5]: <block gr uhd usrp sink
(1)>]: RuntimeError: x300_dac_ctrl: front-end sync failed.
unexpected FIFO depth [0x7]
The X3xx is connected to the host using 1G Ethernet cable.
The network card is Intel Ethernet Converged Network Adapter
X520-DA2. The card can support 10Gbps, but the sfp+ to rj45
adapter can supports only 1Gbps. The output of lspci is shown
below.
lspci
00:00.0 Host bridge: Intel Corporation Sky Lake Host
Bridge/DRAM Registers (rev 07)
00:01.0 PCI bridge: Intel Corporation Sky Lake PCIe Controller
(x16) (rev 07)
00:14.0 USB controller: Intel Corporation Sunrise Point-H USB
3.0 xHCI Controller (rev 31)
00:14.2 Signal processing controller: Intel Corporation
Sunrise Point-H Thermal subsystem (rev 31)
00:16.0 Communication controller: Intel Corporation Sunrise
Point-H CSME HECI #1 (rev 31)
00:16.3 Serial controller: Intel Corporation Sunrise Point-H
KT Redirection (rev 31)
00:17.0 RAID bus controller: Intel Corporation SATA Controller
[RAID mode] (rev 31)
00:1d.0 PCI bridge: Intel Corporation Sunrise Point-H PCI
Express Root Port #9 (rev f1)
00:1f.0 ISA bridge: Intel Corporation Sunrise Point-H LPC
Controller (rev 31)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-H
PMC (rev 31)
00:1f.3 Audio device: Intel Corporation Sunrise Point-H HD
Audio (rev 31)
00:1f.4 SMBus: Intel Corporation Sunrise Point-H SMBus (rev
31)
00:1f.6 Ethernet controller: Intel Corporation Ethernet
Connection (2) I219-LM (rev 31)
01:00.0 Ethernet controller: Intel Corporation 82599ES
10-Gigabit SFI/SFP+ Network Connection (rev 01)
01:00.1 Ethernet controller: Intel Corporation 82599ES
10-Gigabit SFI/SFP+ Network Connection (rev 01)
02:00.0 VGA compatible controller: Advanced Micro Devices,
Inc. [AMD/ATI] Oland XT [Radeon HD 8670 / R7 250/350] (rev 83)
02:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI]
Cape Verde/Pitcairn HDMI Audio [Radeon HD 7700/7800 Series]
Rui