Several Problems encountered after debian is installed

After debian is installed, you may encounter the following problems: 0. Virtual optical drive 1. Resolution 2. touchpad 3. system sound www.2cto.com. Many software requires an installation disk. But for those who use usb to install the system, this is too bad. Mount/home/yourname/Download/debian. iso/media/debian-iso-o loop-t iso9660 can be deleted directly/media/cdrom, then the ln -- symbolic/media/cdrom/media/iso resolution problem can be solved after the driver is installed. However, the power of the driver's video card does not seem to be reflected. The touchpad does not find a good solution. If the system recognizes the touchpad as a PS mouse, you can use these two commands to disable and enable it. // disablesudo rmmod psmouse // enablesudo modprob psmouse (in fact, the psmouse module is sent from the kernel add and delete) generally, the sound card of www.2cto.com is used for sound recognition. Alsa is the underlying driver, while pulseaudio and esound are both sound servers. Do not assume that these two drivers are yourname @ hostname :~ $ Aplay-l ***** List of PLAYBACK Hardware Devices ***** card 0: Generic [HD-Audio Generic], device 3: ati hdmi [ati hdmi] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: Generic_1 [HD-Audio Generic], device 0: ALC269 Analog [ALC269 Analog] Subdevices: 0/1 Subdevice #0: subdevice #0 in this case, it is obvious that card 1 device 0 can sound. However, it is generally set to card 0 device 0yourname @ hostname: ~ in alsa. conf :~ $ Sudo vi/usr/share/alsa. conf defaults. ctl. card 0defaults. pcm. card 0defaults. pcm. device 0 find these lines and change them to the appropriate configuration.