xps13
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mpalourdio
Suspend/hibernation problem
Just wanted to share:
I had huge problems with ubuntu 15.04 (kernel 4 (mainline)) and suspending. I could do pm-suspenda as root, but 'systemctl suspend' as normal user freezed my laptop.
I wanted to change wifi card due to kernel incompatibility and not supporting 802.11n network, and suprising: it fixed my suspend!
I had broadcom module and changed it to intel 7265.
@pszypowicz Thanks for sharing -- suspend has worked for me with the broadcom most but not all of the time, but I get a much slower wireless connection on the broadcom due to no 802.11n support, so I've ordered a 7265 chip. Any pointers on swapping out the card or is it pretty straight forward?
@cboettig Switching m2 card is very straightforward and, thanks to Dell, its well described in official manual too.
@pszypowicz Thanks for the pointer, the Dell manual was very clear and the installation seemed straight forward. I now get much faster wireless over the same connection. Surprisingly I also can no longer get the occasional screen blanking problem I had with an external monitor https://github.com/advancingu/XPS13Linux/issues/20.
On the downside, bluetooth has been a bit more fickle -- my bluetooth keyboard works fine, but when trying to connect a bluetooth headset it seems to kill the bluetooth -- dmesg shows lots of timeout errors and I have to restart the bluetooth system. I don't suppose you've observed anything like that?
I`m not using any Bluetooth device at the moment so I cannot provide any information about it.
@pszypowicz okay thanks. fwiw it seems only to impact any audio/headset bluetooth; other bluetooth devices (keyboard, android) connect fine (interestingly it started detecting the battery status of my bluetooth keyboard as well). The bluetooth headset connected fine on the broadcom card and fine on my older linux laptop which is also running 15.04 though, so this seems to be related to hardware somehow.
@pszypowicz thanks for the pm-suspend trick. was getting annoyed with sleep only working half the time. Is there a non-windows way to install A04 to fix keys sometimes repeating?
Does anyone encounter Caps Lock flashing (very hot) after suspend wakeup? http://en.community.dell.com/techcenter/os-applications/f/4613/t/19630296
oh wait, the pm-suspend trick doesn't quite work all the time :( i'll try disabling the wifi card before sleeping
swapped the broadcom for the intel 7265NGW and got really slow speeds (15/2 Mbit intel vs 102/10 Mbit broadcom). not sure why. did you have to do anything on the software side of things @cboettig @pszypowicz ? I'm on 14.04 3.13.0-55-generic
Not sure if I should add this here or as a new issue, but had a kernel panic today (flashing CAPS lock LED) and after a load of googling came across this http://en.community.dell.com/techcenter/os-applications/f/4613/p/19632979/20772436#20772436
Blacklisting mei and mei_me so far has fixed it....
I've had occasional bad behavior from the wifi and several of the flashing caps lock panic-on-suspends. I'll try the blacklist and the patch from @wengole's link and report back.
EDIT: These changes were effective. No more panics, no wifi problems.
