I developed a method for automatically switching the video driver on my laptop depending on which graphics chip I choose at boot time. I have mentioned this in other threads and have been asked for...
Type: Posts; User: gatman3; Keyword(s):
I developed a method for automatically switching the video driver on my laptop depending on which graphics chip I choose at boot time. I have mentioned this in other threads and have been asked for...
One additional point: The Lenovo text posted by MeikelP also suggests that the W520 could actually drive 3 independent monitors (!) using nvidia graphics. I believe this is true based on my...
On the W520 you can use an external monitor with Integrated (intel) graphics, but VGA only. To use DVI (digital) monitors you need to run Discrete (nvidia) graphics. I believe the Lenovo table...
wolfindersteppe,
I have been running Ubuntu 11.04 32-bit PAE on my W520 for nearly 3 months now, and I have never experienced a sudden unexpected shutdown. There are plenty of other quirks with...
Roberto,
I don't have very many answers, but I can at least tell you that Turbo Boost frequency is not reported in /proc/cpuinfo, so most if not all typical linux applets won't report it...
hemmecke, have you disabled acpi? I'm not sure, but perhaps that could prevent the CPU from speed stepping.
FYI, my experiences are very similar to what Andrei is reporting. I'm also on 1.26 and...
dimm0k,
Yes, I think that's right. I did play around with the settings, but I think the ones I'm using are the defaults.
OK, that makes sense. I remember reading about the fan...
dimm0k, here are power management settings in the BIOS config:
Intel (R) SpeedStep Technology
Mode for AC = Maximum Performance
Mode for Battery = Battery Optimized
Adaptive Thermal...
So, I just played with it some more and got some very odd results. I suspect there is a bug in BIOS 1.26.
When I boot with the AC adapter plugged in, I see no difference in CPU Turbo Boost speed...
dimm0k, thanks for the link to the Lenovo thread on Turbo Boost. I hadn't seen that before. I didn't even realize that Turbo Boost had been working on BIOS < 1.25. I guess in reality I broke it...
VValdo, thanks for pointing us to the other thread. Sounds like there are others out there who are struggling with the recent 64-bit Ubuntu releases on both the W520 and the T420. I'm glad to hear...
dimm0k - you're right about the BIOS update being scary. They could really use a progress bar. Plus, that message after the update completes is hilarious - they tell you that you can (1) leave the...
dimm0k, thanks a ton for sharing the info about BIOS 1.26. After I read the release notes which list this fix:
...then I couldn't help but try the BIOS update even though it's only a...
I also found the i7z utility for reporting CPU speed, apparently including Turbo Boost speed:
http://code.google.com/p/i7z/
(You'll need to install libncurses5-dev from the repository before...
dimm0k, welcome!
Interesting comments about BIOS version and ACPI. I'm pretty sure I was running BIOS 1.22 when I had all those problems with Ubuntu 11.04 64-bit with Discrete graphics, although...
wolfindersteppe, yes I have done that, and yes it worked for me with 11.04 32-bit selecting "Discrete Graphics" in the BIOS. But I only tried it one time a few days ago just to see if it would work,...
I just got it working. The script was executable; that wasn't the problem. The other thread suggests that you only need to disable the odd numbered CPUs (i.e. the hyperthreaded ones). But for some...
Update from my side... After three days running 32-bit 11.04 everything is still running great with a couple minor exceptions. I have noticed that I am seeing the problem with stuttering video...
VValdo, I was getting occasional lockups too, maybe once per day.
However, I seem to have solved my problems today. The magic recipe is... running 32-bit Ubuntu, plus updating the BIOS to version...
Update on my experiences...
64-bit is a no go, at least for me. I tried 10.10 and 11.04. 10.10 was a total disaster; the machine would sometimes hang on boot, and sometimes ran at an incredibly...
Daniel - Thanks for the info and especially the prompt reply. You've given me some hope. I'll give the 10.10 release a shot plus the workarounds you cited. Now that you mention it, I remember...
Has anyone been able to get the W520 to boot with the proprietary nvidia driver WITHOUT disabling ACPI (kernel parameter "acpi=off")? If so, can you share your recipe?
I am running kernel...
sentraser,
I have had a W520 for about a week now as an upgrade to my old W500 (I skipped the W510 generation). I have to say that this W520 has been a little challenging, although I am writing...
I ran into problems with Flash on Youtube, and found advice elsewhere that suggested disabling hardware acceleration in Flash. In what I've read, there is some suspicion that Youtube recently...
I have also had problems with my bluetooth mouse that started in 10.10. I'm not sure if my problems are related; I attributed them to the new bluedevil bluetooth stack which, I think, is only part...