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2014-04-14 23:36:05 -0500 answered a question Fedora 19 doesn't detect wireless card on lenovo yoga 13

Try this:

sudo modprobe -r ideapad_laptop

And should that work for you, you can make it permanent by doing this:

sudo echo "blacklist ideapad_laptop" > /etc/modprobe.d/ideapad_wlan-blacklist.conf

Then reboot.

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2014-02-13 10:16:48 -0500 asked a question How to port-forwarding requests coming into a kVM host (say, kvmHost) to one of its guests (say, kvmGuest01) ...


What is the sequence of firewall-cmd(1) commands (and/or other commands) that I need to run on kvmHost to enable incoming TCP requests to kvmHost:8888 to be forwarded to, say, kvmGuest01:8888? (i.e. to one of it's KVM guests).

Noting that:

  • the active zone is the public zone
  • the host network is
  • the kvmHost IP address is
  • the guest network is
  • and the kvmGuest01 IP address is

I tried the following commands (on kvmHost), which does not work:

root@kvmHost# firewall-cmd --zone=public --add-masquerade
root@kvmHost# firewall-cmd --zone=public --add-forward-port=port=8888:proto=tcp:toaddr=

Perhaps the above commands are necessary, but apparently they are not sufficient. For example, when I do this:

user@kvmHost$ telnet kvmGuest01 8888
Connected to kvmGuest01.
Escape character is '^]'.

The above works as expected. But the following does not work, and is what I need to work (i.e. to forward):

user@kvmHost$ telnet kvmHost 8888
telnet: connect to address Connection refused

Note that the above firewall commands apply to the Fedora kvmHost. Does anything also need to be to done at the KVM networking layer (e.g. virsh commands)?

kvmHost to kvmGuests intra-machine communication always seem so unnecessarily tricky.

Anyway, if someone can help fill in the gaps for me, I'd certainly appreciate it. =:)

Thank you in advance!


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2013-11-16 15:48:35 -0500 answered a question Suspend / Resume and Power Off not working properly on the Intel/Haswell video based Acer Aspire S7 laptop ...


Btw... Just to test, I booted Windows-7 live from a USB stick (yes one can be created) to see what happens when I click "Shutdown",... and sure enough it shut the O/S down and AND powered off this Acer S7 laptop.

So,... what could be missing from my very (VERY) complete install of Fedora 19 that would shut down this laptop too? I have Fedora 19 running on two other laptops, and power off isn't an issue. Maybe I'm missing a necessary configuration parameter for this particular laptop (kernel line in grub2, or whatever).

Any ideas. Thank you.

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2013-11-08 23:40:24 -0500 asked a question Suspend / Resume and Power Off not working properly on the Intel/Haswell video based Acer Aspire S7 laptop ...


I have an Acer Aspire S7 laptop on which I installed Fedora 19 64bit.

It's running kernel version: 3.11.6-201 (64 bit), but the below problem has existed in prior kernel versions, too.

As mentioned in the subject line, Suspend / Resume and Power Off do not not work properly on this Intel / Haswell video based laptop.

Specifically, I can't get the following things to work properly on this laptop:

Suspend/Resume & Hibernate/Resume doesn't work:

The laptop doesn't properly resume from Sleep or Hibernate modes. The screen
stays black (i.e. resumption of video does not happen). I can, however, ssh
into the laptop and interact with it (including rebooting it).

Also, after Sleep/Hibernate and Resume, when I press and release the power button
(to try to trigger a shutdown because there's nothing else I can do at this  
point), it too to no longer responds. Press / release of the power button
works fine otherwise.

So I basically have to press and hold the power button to power off the laptop.

Power Off of laptop doesn't happen after "init 0".

When I shutdown the O/S gracefully (either executing init 0, or press/releasing the
power button when ths O/S is properly running), Fedora shuts down gracefully but does
now power off the laptop. This, despite acpid running (maybe I don't have it
configured properly).

To help, here is 'lspci' output for this laptop, with even more verbose output provided in the PASTEBIN URL that follows:

user$ sudo lspci

00:00.0 Host bridge: Intel Corporation Haswell-ULT DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 09) <--------- VIDEO
00:03.0 Audio device: Intel Corporation Device 0a0c (rev 09)
00:14.0 USB controller: Intel Corporation Lynx Point-LP USB xHCI HC (rev 04)
00:16.0 Communication controller: Intel Corporation Lynx Point-LP HECI #0 (rev 04)
00:1b.0 Audio device: Intel Corporation Lynx Point-LP HD Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation Lynx Point-LP PCI Express Root Port 3 (rev e4)
00:1d.0 USB controller: Intel Corporation Lynx Point-LP USB EHCI #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation Lynx Point-LP LPC Controller (rev 04)
00:1f.2 RAID bus controller: Intel Corporation 82801 Mobile SATA Controller [RAID mode] (rev 04)
00:1f.3 SMBus: Intel Corporation Lynx Point-LP SMBus Controller (rev 04)
01:00.0 Network controller: Intel Corporation Wireless 7260 (rev 6b)

It's a bummer to have to power down / up the laptop constantly because of this (instead of Sleep/Hibernate resume).

Any ideas? Thank you in advance.