Re: [gentoo-user] multiple monitor refresh rates and broken brains (was: fonts and bad eyes)
On Sat, May 17, 2014 at 9:37 PM, Greg Turner g...@malth.us wrote: On Sat, May 17, 2014 at 4:21 AM, David Haller gen...@dhaller.de wrote: Oh, and _very_ importantly: get a _GOOD_ matt monitor if you haven't yet. Apologies, David, for hijacking your really good question-thread, which I'm also very eager to hear people's answers to. But, this reminds me of something I've been pondering lately... I think maybe refresh-rate discrepancies are subtly evil in multi-monitor setups. When I look at my 59.9 kHz apple cinema next to my 60 kHz POS Dell throwaway monitor, something spooky clearly happens in my brain -- if I get up close and look carefully, the pixels seem to rather dramatically swim near the bezels between the two monitors, in a way that reminds me of a migraine prodrome (perhaps because, to some degree, that's exactly what I'm inducing in my brain, by exposing it to high-frequency polyharmonic interference (presumably, there's a 0.5 MHz harmonic between those two displays, no wonder my brain doesn't like it!). From your description I am suspecting that your problem is not due to 59.9 Hz vs 60.0 Hz but rather poorly tuned analog to digital conversions in one or both of the monitors, you could use a high-frequency test pattern such as [1] and press your monitors' Auto button (or select Auto configuration from some menu). The high frequency pattern will help the monitor during the auto configuration and let it tune the phase of the analog signal more precisely. This is if you are using a VGA cable and not something digital, such as DVI or HDMI. If you are having the same problems with digital signalling you probably have a bad cable. In practice, I don't seem to have had any huge problem from this (and I'm going to get rid of that crappy Dell soon, anyhow) but I have heard reports from people claiming this type of thing caused eye fatigue and headaches. My semi-baseless theory is that, so long as the remainders of the greatest common multiples of your various monitors' refresh-rates form nice clean ratios like 1:2, 2:3, etc, you probably won't fry your wetware input circuitry looking at them. However, if, as above, there are ugly harmonics, I suspect it might be pretty bad for some people. If, like me, you're too cheap for the 100% solution of buying identical monitors, maybe just try to ensure everything you buy supports standard 60kHz standard modes, or even go read the 1990's-era ModeLine authoring FAQ's and attempt to actually understand the problem and fix it, if you're feeling ambitious :) Anyhow... we now return to our regularly schedule programming... -gmt [1]: http://pixelmappat.nu/ Best regards, Joakim
Re: [gentoo-user] Python Installation broken
2014-01-28 Silvio Siefke siefke_lis...@web.de: Hello, the error message was not correct copy paste. Im in crisis :) gentoomobile ~ # equery u nikola Traceback (most recent call last): File /usr/bin/equery, line 5, in module from pkg_resources import load_entry_point File /usr/lib/python2.7/site-packages/pkg_resources.py, line 3011, in module parse_requirements(__requires__), Environment() File /usr/lib/python2.7/site-packages/pkg_resources.py, line 626, in resolve raise DistributionNotFound(req) pkg_resources.DistributionNotFound: setuptools==2.1 It seems that you need to reinstall setuptools (since you deleted it according to your first post.) emerge -av1 setuptools Thank you for help Nice Day Silvio
Re: [gentoo-user] Brand new instalation - Network problem
2013/10/26 João Matos jaon...@gmail.com: Hi list, I`ve just installed a brand new gentoo amd64 and there is this problem: my Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168 PCI Express Gigabit Ethernet controller (rev 06) is recognized as sit0 , but I can't get any IP Adress. sit0 is completely unrelated, it is an IPv6 tunnel device. You need to compile the r8169 driver. Make sure CONFIG_R8169=m or y in your kernel config and try again (modprobe r8169). I have a Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06), pci id 10ec:8168 on my motherboard and it works fine with the R8169 driver on kernel 3.10.9 (and has been working since at least the 3.4 series, which was when I installed this system) dhcp takes long and doesn't get any result. dhcpcd doesn't work either. Even if I choose a manual address I cant ping other devices. When I used ifconfig, I got something like ipv6 over ipv4, but I will only need ipv4. So I disabled ipv6 USE flag, but I didn't change anything. The weird thing is that if I disable the IPV6 kernel support (manual configuration btw), the network interface (sit0) desappears! When I reboot the system using a usb botable Ubuntu everything works fine, using the same hardware/infrastructure. I have no idea what is going on here, so, please, send me some links. Thank you all, -- João Neto Linux User #461527 http://br.linkedin.com/pub/jo%C3%A3o-de-matos/7/316/552
Re: [gentoo-user] wlan0 failed to start
2013/10/2 Tomáš Hájek tomcat.mas...@gmail.com: Hi guys! For me this is first time installing gentoo on my own and right now I'm really out of ideas. My problem is: tombook tom # /etc/init.d/net.wlan0 start net.wlan0 | * Bringing up interface wlan0 net.wlan0 | * ERROR: interface wlan0 does not exist net.wlan0 | * Ensure that you have loaded the correct kernel module for your hardware net.wlan0 | * ERROR: net.wlan0 failed to start tombook tom # You can see that my wifi interface does not come up and ifconfig don't know about it either. tombook tom # ifconfig -a lo: flags=73AKTIVOVÁNO,SMYČKA,BĚŽÍ mtu 65536 inet 127.0.0.1 síťová_maska 255.0.0.0 inet6 ::1 délka_prefixu 128 scopeid 0x10stroj loop délka_odchozí_fronty 0 (Místní smyčka) RX packetů 0 bajtů 0 (0,0 B) RX chyb 0 zahozeno 0 přetečení 0 rámců 0 TX packetů 0 bajtů 0 (0,0 B) TX chyb 0 zahozeno 0 přetečení 0 přenos 0 kolizí 0 sit0: flags=128NEARP mtu 1480 sit délka_odchozí_fronty 0 (IPv6-in-IPv4) RX packetů 0 bajtů 0 (0,0 B) RX chyb 0 zahozeno 0 přetečení 0 rámců 0 TX packetů 0 bajtů 0 (0,0 B) TX chyb 0 zahozeno 0 přetečení 0 přenos 0 kolizí 0 tombook tom # I've tried probably every solution I could find on forums, but nothing works. I would make me very happy if someone could help me solving this problem :) For further info here is my lspci, and config as attachment of this email. tombook tom # lspci -v -- snip -- 04:00.0 Network controller: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller (rev 01) Subsystem: AzureWave Device 2047 Flags: bus master, fast devsel, latency 0, IRQ 17 Memory at fea0 (64-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [58] Vendor Specific Information: Len=78 ? Capabilities: [48] MSI: Enable- Count=1/1 Maskable- 64bit+ Capabilities: [d0] Express Endpoint, MSI 00 Capabilities: [100] Advanced Error Reporting Capabilities: [13c] Virtual Channel Capabilities: [160] Device Serial Number 00-00-ca-ff-ff-66-00-08 Capabilities: [16c] Power Budgeting ? Kernel driver in use: bcma-pci-bridge According to the b43 page on linux wireless [1], the BCM4313 chipset is not yet supported, but someone is working on it. There is, however, another driver [2] which should work if the correct firmware is installed, try emerging linux-firmware and then modprobe brcmsmac As I said, I'm out of ideas and appreciate any help. Thanks --- Tomas Hajek CZE [1]http://wireless.kernel.org/en/users/Drivers/b43#Supported_devices [2]http://wireless.kernel.org/en/users/Drivers/brcm80211#Supported_Chips
Re: [gentoo-user] re: scrolling not seamless in firefox/thunderbird
2013/9/22 Alexander Kapshuk alexander.kaps...@gmail.com On 09/21/2013 06:32 PM, Al wrote: Bruce Hill wrote: I have Use smooth scrolling checked and no such wavy line anywhere. Hmmm I just tried Firefox, and get the wavy line when Use smooth scolling is checked (scrolling with the mouse wheel). It goes away when unchecked. Did the same in Thunderbird, and I don't see the wavy line, no matter what the setting. Al Having the Use smooth scrolling option unchecked in both Firefox and Thunderbird seems to have fixed the 'wavy line' problem for me. Thanks. I'm guessing the wavy line that you describe is 'tearing' that appears when the display is not synced to the framebuffer, i.e. vsync. I believe some of the graphics drivers are not even capable of vsync currently in X11, but I'm not certain. /JG
