blackwing0013
July 20th, 2012, 08:03 AM
Hi,
I have a problem with laptop, which is a Samsung NP535U3C A01. It has a Atheros AR9462 for wifi.
The problem is when I hibernate my laptop and turn it on again, the wifi is disabled when resuming from hibernate. Using rfkill, the wifi is hard blocked when resuming from hibernation. For some reason this only happens when I boot the laptop with Ubuntu. Doesn't happen on Windows.
Upon observation, it seems that during the process of putting the laptop into hibernation, there is something that causes the wifi to be hard blocked, likely switched off. Now the notebook doesn't have a switch/button for tuning on and off the wifi. It seems that the reason for this is that the BIOS remembers the state of the hardware, such as brightness levels, which hard ware was enabled or disabled, when resuming from hibernate. Somewhere during the the process of hibernating in Ubuntu 12.04 64-bit, the wifi hardware is switched off. I would like like some help to figure out how I can prevent this.
For now, the only workaround that I know that will let me use the wifi when resuming Ubuntu is to boot another OS, like Windows 7, then reboot immediately to Ubuntu so that I can use the Wifi.
I have a problem with laptop, which is a Samsung NP535U3C A01. It has a Atheros AR9462 for wifi.
The problem is when I hibernate my laptop and turn it on again, the wifi is disabled when resuming from hibernate. Using rfkill, the wifi is hard blocked when resuming from hibernation. For some reason this only happens when I boot the laptop with Ubuntu. Doesn't happen on Windows.
Upon observation, it seems that during the process of putting the laptop into hibernation, there is something that causes the wifi to be hard blocked, likely switched off. Now the notebook doesn't have a switch/button for tuning on and off the wifi. It seems that the reason for this is that the BIOS remembers the state of the hardware, such as brightness levels, which hard ware was enabled or disabled, when resuming from hibernate. Somewhere during the the process of hibernating in Ubuntu 12.04 64-bit, the wifi hardware is switched off. I would like like some help to figure out how I can prevent this.
For now, the only workaround that I know that will let me use the wifi when resuming Ubuntu is to boot another OS, like Windows 7, then reboot immediately to Ubuntu so that I can use the Wifi.