I've did some research about error, that i posted before:
miner is reached Xorg max clients limit - in Debian it's 256. When i look into lsof -U output, i saw, that every sa-solver opens 17 connections, so we have 17 (per sa-solver) * 7 (GPUs) * 2 (thread per GPU) = 238 connections just for solvers and a few connections from main process: http://sprunge.us/UgXB - may be more just after startup because i see only 16 connections from last 2 threads. So, when i removed banner checking from silentarmy script

$ lsof -U | grep sa-solver
sa-solver 2121  mrb    0u  unix 0x0000000000000000      0t0 342442 type=STREAM
sa-solver 2122  mrb    0u  unix 0x0000000000000000      0t0 342446 type=STREAM
sa-solver 2123  mrb    0u  unix 0x0000000000000000      0t0 343439 type=STREAM
sa-solver 2124  mrb    0u  unix 0x0000000000000000      0t0 341927 type=STREAM