Zhai Can bczhc

Hello world

C

// demo.c
void _start() {
    // 1. 调用 write(1, "Hello\n", 6)
    const char *msg = "Hello\n";
    long syscall_nr = 1; // write 的系统调用号

先设置sudo ydotool免密执行。

首先使用另一个设备连接上电脑的ssh。在电脑的tty下运行./start-random-display，后面等待的十秒内，走离电脑屏幕。待十秒后随机桌面启动后，在ssh连接的终端中运行./manage-game start，自动启动Steam并进入游戏（一分钟多一点）。然后可以回到电脑旁。

完成之后，在ssh终端中使用./manage-game exit退出，再./close-display退出桌面，准备进行下一轮。

力竭了

freq-compress in.wav out.wav -c 512
ffmpeg -i out.wav -f s16le - | ffmpeg -f s16le -ac 2 -ar 44100 -i pipe:0 -filter:a 'atempo=0.5' out2.wav -y
mpv out2.wav

全损

Pulse设备：

radioout=alsa_input.usb-C-Media_Electronics_Inc._USB_Audio_Device-00.mono-fallback
radiosink=alsa_output.usb-C-Media_Electronics_Inc._USB_Audio_Device-00.analog-stereo

把电台接收回放到电脑

THUNDEROBOT ZERO游戏本上遇到的Linux硬件兼容问题

lshw:

description: Notebook
product: ZERO (JT0096004)
vendor: THUNDEROBOT
version: Type1Version

	#define _GNU_SOURCE
	#include <stdio.h>
	#include <stdlib.h>
	#include <signal.h>
	#include <ucontext.h>

	void handle_fpe(int sig, siginfo_t info, void ucontext) {
	printf("Caught SIGFPE! Attempting to skip the broken instruction...\n");

	// 强制转换为 ucontext_t 结构体指针

	#!/usr/bin/env ruby

	# --- 配置区 ---
	SAMPLE_RATE = 44100
	FREQUENCY = 800.0
	DURATION = 15
	# 你的 USB 设备关键字（用于 grep 匹配）
	DEVICE_KEY = "usb-C-Media_Electronics_Inc._USB_Audio_Device-00"
	# aplay 完整设备路径
	DEVICE_PATH = "pulse:alsa_output.#{DEVICE_KEY}.analog-stereo"

	Feb 13 00:40:42 bczhc-arch systemd-journald[409]: Journal stopped
	Feb 13 00:40:42 bczhc-arch systemd-udevd[453]: Failed to remove file descriptor "config-serialization" from the store, ignoring: Connection refused
	Feb 13 00:40:42 bczhc-arch systemd-journald[409]: Received SIGTERM from PID 1 (systemd-shutdow).
	Feb 13 00:40:42 bczhc-arch systemd-shutdown[1]: Sending SIGTERM to remaining processes...
	Feb 13 00:40:42 bczhc-arch systemd-shutdown[1]: Syncing filesystems and block devices.
	Feb 13 00:40:42 bczhc-arch systemd-shutdown[1]: Watchdog running with a hardware timeout of 10min.
	Feb 13 00:40:42 bczhc-arch systemd-shutdown[1]: Using hardware watchdog /dev/watchdog0: 'intel_oc_wdt', version 0.
	Feb 13 00:40:42 bczhc-arch kernel: watchdog: watchdog0: watchdog did not stop!
	Feb 13 00:40:42 bczhc-arch systemd[1]: Watchdog running with a hardware timeout of 10min.
	Feb 13 00:40:42 bczhc-arch systemd[1]: Using hardware watchdog /dev/watchdog0: 'intel_oc_wdt', version 0.