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• EF Query with conditional include that uses Joins

  - by makerofthings7

  This is a follow up to another user's question. I have 5 tables CompanyDetail CompanyContacts FK to CompanyDetail CompanyContactsSecurity FK to CompanyContact UserDetail UserGroupMembership FK to UserDetail How do I return all companies and include the contacts in the same query? I would like to include companies that contain zero contacts. Companies have a 1 to many association to Contacts, however not every user is permitted to see every Contact. My goal is to get a list of every Company regardless of the count of Contacts, but include contact data. Right now I have this working query: var userGroupsQueryable = _entities.UserGroupMembership .Where(ug => ug.UserID == UserID) .Select(a => a.GroupMembership); var contactsGroupsQueryable = _entities.CompanyContactsSecurity;//.Where(c => c.CompanyID == companyID); /// OLD Query that shows permitted contacts /// ... I want to "use this query inside "listOfCompany" /// //var permittedContacts= from c in userGroupsQueryable //join p in contactsGroupsQueryable on c equals p.GroupID //select p; However this is inefficient when I need to get all contacts for all companies, since I use a For..Each loop and query each company individually and update my viewmodel. Question: How do I shoehorn the permittedContacts variable above and insert that into this query: var listOfCompany = from company in _entities.CompanyDetail.Include("CompanyContacts").Include("CompanyContactsSecurity") where company.CompanyContacts.Any( // Insert Query here.... // b => b.CompanyContactsSecurity.Join(/*inner*/,/*OuterKey*/,/*innerKey*/,/*ResultSelector*/) ) select company; My attempt at doing this resulted in: var listOfCompany = from company in _entities.CompanyDetail.Include("CompanyContacts").Include("CompanyContactsSecurity") where company.CompanyContacts.Any( // This is concept only... doesn't work... from grps in userGroupsQueryable join p in company.CompanyContactsSecurity on grps equals p.GroupID select p ) select company;

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• Why is my Internet connection randomly dropping?

  - by Jeanno

  Ever since I have installed 12.04 (clean install not an upgrade), i have been having a drop in the Internet connection. The drop in the connection can be anything from 15 seconds to about 3 mins, and then the connection comes back. This behaviour happens while I am actively browsing the Internet, or if I wake up the computer and open Firefox (sometimes I have connection and sometimes I don't) . Please note that when the internet connection is on, it is not slow (as speedtest.net results show) In the beginning, I thought it was a problem with the driver r8169 for my RTL8111/8168B Ethernet card, so I downloaded the r8168 from Realtek website, followed the detailed instructions (blacklisted r8169, changed the file to '.bsh' ...), but still the same problem persisted. So I switched to a wireless connection, and I got the same problem with internet connection dropping randomly. Any ideas? Thanks in advance Output from 'lspci -v' Code: 00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09) Subsystem: Dell Device 04a7 Flags: bus master, fast devsel, latency 0 Capabilities: [e0] Vendor Specific Information: Len=0c <?> 00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 I/O behind bridge: 0000e000-0000efff Memory behind bridge: f8000000-fa0fffff Prefetchable memory behind bridge: 00000000d0000000-00000000dbffffff Capabilities: [88] Subsystem: Dell Device 04a7 Capabilities: [80] Power Management version 3 Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [a0] Express Root Port (Slot+), MSI 00 Capabilities: [100] Virtual Channel Capabilities: [140] Root Complex Link Kernel driver in use: pcieport Kernel modules: shpchp 00:01.1 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=02, subordinate=02, sec-latency=0 I/O behind bridge: 0000d000-0000dfff Memory behind bridge: f4000000-f60fffff Prefetchable memory behind bridge: 00000000c0000000-00000000cbffffff Capabilities: [88] Subsystem: Dell Device 04a7 Capabilities: [80] Power Management version 3 Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [a0] Express Root Port (Slot+), MSI 00 Capabilities: [100] Virtual Channel Capabilities: [140] Root Complex Link Kernel driver in use: pcieport Kernel modules: shpchp 00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04) Subsystem: Dell Device 04a7 Flags: bus master, fast devsel, latency 0, IRQ 52 Memory at f6108000 (64-bit, non-prefetchable) [size=16] Capabilities: [50] Power Management version 3 Capabilities: [8c] MSI: Enable+ Count=1/1 Maskable- 64bit+ Kernel driver in use: mei Kernel modules: mei 00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05) (prog-if 20 [EHCI]) Subsystem: Dell Device 04a7 Flags: bus master, medium devsel, latency 0, IRQ 16 Memory at f6107000 (32-bit, non-prefetchable) [size=1K] Capabilities: [50] Power Management version 2 Capabilities: [58] Debug port: BAR=1 offset=00a0 Capabilities: [98] PCI Advanced Features Kernel driver in use: ehci_hcd 00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05) Subsystem: Dell Device 04a7 Flags: bus master, fast devsel, latency 0, IRQ 53 Memory at f6100000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 2 Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00 Capabilities: [100] Virtual Channel Capabilities: [130] Root Complex Link Kernel driver in use: snd_hda_intel Kernel modules: snd-hda-intel 00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b5) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=03, subordinate=03, sec-latency=0 Memory behind bridge: fa400000-fa4fffff Capabilities: [40] Express Root Port (Slot+), MSI 00 Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit- Capabilities: [90] Subsystem: Dell Device 04a7 Capabilities: [a0] Power Management version 2 Kernel driver in use: pcieport Kernel modules: shpchp 00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b5) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=04, subordinate=04, sec-latency=0 I/O behind bridge: 0000c000-0000cfff Prefetchable memory behind bridge: 00000000dc100000-00000000dc1fffff Capabilities: [40] Express Root Port (Slot+), MSI 00 Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit- Capabilities: [90] Subsystem: Dell Device 04a7 Capabilities: [a0] Power Management version 2 Kernel driver in use: pcieport Kernel modules: shpchp 00:1c.2 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 3 (rev b5) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=05, subordinate=05, sec-latency=0 I/O behind bridge: 0000b000-0000bfff Memory behind bridge: fa300000-fa3fffff Capabilities: [40] Express Root Port (Slot+), MSI 00 Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit- Capabilities: [90] Subsystem: Dell Device 04a7 Capabilities: [a0] Power Management version 2 Kernel driver in use: pcieport Kernel modules: shpchp 00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b5) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=06, subordinate=06, sec-latency=0 I/O behind bridge: 0000a000-0000afff Memory behind bridge: fa200000-fa2fffff Capabilities: [40] Express Root Port (Slot+), MSI 00 Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit- Capabilities: [90] Subsystem: Dell Device 04a7 Capabilities: [a0] Power Management version 2 Kernel driver in use: pcieport Kernel modules: shpchp 00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05) (prog-if 20 [EHCI]) Subsystem: Dell Device 04a7 Flags: bus master, medium devsel, latency 0, IRQ 23 Memory at f6106000 (32-bit, non-prefetchable) [size=1K] Capabilities: [50] Power Management version 2 Capabilities: [58] Debug port: BAR=1 offset=00a0 Capabilities: [98] PCI Advanced Features Kernel driver in use: ehci_hcd 00:1f.0 ISA bridge: Intel Corporation P67 Express Chipset Family LPC Controller (rev 05) Subsystem: Dell Device 04a7 Flags: bus master, medium devsel, latency 0 Capabilities: [e0] Vendor Specific Information: Len=0c <?> Kernel modules: iTCO_wdt 00:1f.2 RAID bus controller: Intel Corporation 82801 SATA Controller [RAID mode] (rev 05) Subsystem: Dell Device 04a7 Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 42 I/O ports at f070 [size=8] I/O ports at f060 [size=4] I/O ports at f050 [size=8] I/O ports at f040 [size=4] I/O ports at f020 [size=32] Memory at f6105000 (32-bit, non-prefetchable) [size=2K] Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [70] Power Management version 3 Capabilities: [a8] SATA HBA v1.0 Capabilities: [b0] PCI Advanced Features Kernel driver in use: ahci 00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05) Subsystem: Dell Device 04a7 Flags: medium devsel, IRQ 5 Memory at f6104000 (64-bit, non-prefetchable) [size=256] I/O ports at f000 [size=32] Kernel modules: i2c-i801 01:00.0 VGA compatible controller: NVIDIA Corporation Device 0dc5 (rev a1) (prog-if 00 [VGA controller]) Subsystem: NVIDIA Corporation Device 085b Flags: bus master, fast devsel, latency 0, IRQ 16 Memory at f8000000 (32-bit, non-prefetchable) [size=16M] Memory at d0000000 (64-bit, prefetchable) [size=128M] Memory at d8000000 (64-bit, prefetchable) [size=32M] I/O ports at e000 [size=128] Expansion ROM at fa000000 [disabled] [size=512K] Capabilities: [60] Power Management version 3 Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+ Capabilities: [78] Express Endpoint, MSI 00 Capabilities: [b4] Vendor Specific Information: Len=14 <?> Capabilities: [100] Virtual Channel Capabilities: [128] Power Budgeting <?> Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?> Kernel driver in use: nouveau Kernel modules: nouveau, nvidiafb 01:00.1 Audio device: NVIDIA Corporation GF106 High Definition Audio Controller (rev a1) Subsystem: NVIDIA Corporation Device 085b Flags: bus master, fast devsel, latency 0, IRQ 17 Memory at fa080000 (32-bit, non-prefetchable) [size=16K] Capabilities: [60] Power Management version 3 Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+ Capabilities: [78] Express Endpoint, MSI 00 Kernel driver in use: snd_hda_intel Kernel modules: snd-hda-intel 02:00.0 VGA compatible controller: NVIDIA Corporation Device 0dc5 (rev a1) (prog-if 00 [VGA controller]) Subsystem: NVIDIA Corporation Device 085b Flags: bus master, fast devsel, latency 0, IRQ 17 Memory at f4000000 (32-bit, non-prefetchable) [size=32M] Memory at c0000000 (64-bit, prefetchable) [size=128M] Memory at c8000000 (64-bit, prefetchable) [size=64M] I/O ports at d000 [size=128] Expansion ROM at f6000000 [disabled] [size=512K] Capabilities: [60] Power Management version 3 Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+ Capabilities: [78] Express Endpoint, MSI 00 Capabilities: [b4] Vendor Specific Information: Len=14 <?> Capabilities: [100] Virtual Channel Capabilities: [128] Power Budgeting <?> Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?> Kernel driver in use: nouveau Kernel modules: nouveau, nvidiafb 02:00.1 Audio device: NVIDIA Corporation GF106 High Definition Audio Controller (rev a1) Subsystem: NVIDIA Corporation Device 085b Flags: bus master, fast devsel, latency 0, IRQ 18 Memory at f6080000 (32-bit, non-prefetchable) [size=16K] Capabilities: [60] Power Management version 3 Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+ Capabilities: [78] Express Endpoint, MSI 00 Kernel driver in use: snd_hda_intel Kernel modules: snd-hda-intel 03:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 03) (prog-if 30 [XHCI]) Subsystem: Dell Device 04a7 Flags: bus master, fast devsel, latency 0, IRQ 16 Memory at fa400000 (64-bit, non-prefetchable) [size=8K] Capabilities: [50] Power Management version 3 Capabilities: [70] MSI: Enable- Count=1/8 Maskable- 64bit+ Capabilities: [90] MSI-X: Enable+ Count=8 Masked- Capabilities: [a0] Express Endpoint, MSI 00 Capabilities: [100] Advanced Error Reporting Capabilities: [140] Device Serial Number ff-ff-ff-ff-ff-ff-ff-ff Capabilities: [150] Latency Tolerance Reporting Kernel driver in use: xhci_hcd 04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06) Subsystem: Dell Device 04a7 Flags: bus master, fast devsel, latency 0, IRQ 51 I/O ports at c000 [size=256] Memory at dc104000 (64-bit, prefetchable) [size=4K] Memory at dc100000 (64-bit, prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [70] Express Endpoint, MSI 01 Capabilities: [b0] MSI-X: Enable- Count=4 Masked- Capabilities: [d0] Vital Product Data Capabilities: [100] Advanced Error Reporting Capabilities: [140] Virtual Channel Capabilities: [160] Device Serial Number 03-00-00-00-68-4c-e0-00 Kernel driver in use: r8168 Kernel modules: r8168 05:00.0 FireWire (IEEE 1394): VIA Technologies, Inc. VT6315 Series Firewire Controller (rev 01) (prog-if 10 [OHCI]) Subsystem: Dell Device 04a7 Flags: bus master, fast devsel, latency 0, IRQ 18 Memory at fa300000 (64-bit, non-prefetchable) [size=2K] I/O ports at b000 [size=256] Capabilities: [50] Power Management version 3 Capabilities: [80] MSI: Enable- Count=1/1 Maskable+ 64bit+ Capabilities: [98] Express Endpoint, MSI 00 Capabilities: [100] Advanced Error Reporting Capabilities: [130] Device Serial Number 00-10-dc-ff-ff-cf-56-1a Kernel driver in use: firewire_ohci Kernel modules: firewire-ohci 06:00.0 SATA controller: JMicron Technology Corp. JMB362 SATA Controller (rev 10) (prog-if 01 [AHCI 1.0]) Subsystem: Dell Device 04a7 Flags: bus master, fast devsel, latency 0, IRQ 19 I/O ports at a040 [size=8] I/O ports at a030 [size=4] I/O ports at a020 [size=8] I/O ports at a010 [size=4] I/O ports at a000 [size=16] Memory at fa210000 (32-bit, non-prefetchable) [size=512] Capabilities: [8c] Power Management version 3 Capabilities: [50] Express Legacy Endpoint, MSI 00 Kernel driver in use: ahci Note that my wireless card is not showing, I have the Ralink 3390 card (which apparently does not show up on Ubuntu for some reason), however I am able to connect to wireless network and connect to the internet (when it is working)

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• Getting Wrong Answer in range maximum query [on hold]

  - by user3186829

  I've just learnt range minimum and maximum queries using segment trees.But when I implemented it on my own I'm getting wrong answer.Logically I don't find any mistake in my code but if any one can point it out then I would be really thankful. Code in C++: #include<bits/stdc++.h> using namespace std; #define LL long long #define mp make_pair #define pb push_back #define gc getchar_unlocked #define pc putchar_unlocked #define LD long double #define MAXN 19999999 #define max(a,b) ((a)>(b)?(a):(b)) LL P[MAXN+15]; LL ST[2*MAXN+25]; long N,M,i,A,B,K; void build(long id,long L,long R) { long M=(L+R)>>1L; long LCT=id<<1L; long RCT=LCT+1L; if(L==R) { ST[id]=P[L]; return; } build(LCT,L,M); build(RCT,M+1,R); } //Range Update of segment tree void updateST(long id,long L,long R,long Q1,long Q2,long val) { long M=(L+R)>>1L; long LCT=id<<1L; long RCT=LCT+1L; if(L>Q2||R<Q1) { return; } if(L==Q1&&R==Q2) { ST[id]+=val; return; } if(Q2<=M) { updateST(LCT,L,M,Q1,Q2,val); } else if(Q1>M) { updateST(RCT,M+1,R,Q1,Q2,val); } else { updateST(LCT,L,M,Q1,M,val); updateST(RCT,M+1,R,M+1,Q2,val); } } //Query for finding maximum element in a given range[Q1,Q2] and 1<=Q1,Q2<=N LL query2(long id,long L,long R,long Q1,long Q2) { long M=(L+R)>>1; long LCT=id<<1; long RCT=LCT+1; if(L>Q2||R<Q1) { return 0; } if(L==Q1&&R==Q2) { return ST[id]; } if(Q2<=M) { return query2(LCT,L,M,Q1,Q2); } else if(Q1>M) { return query2(RCT,M+1,R,Q1,Q2); } else { LL G=query2(LCT,L,M,Q1,M); LL H=query2(RCT,M+1,R,M+1,Q2); LL RES=max(G,H); return RES; } } int main() { scanf("%ld %ld",&N,&M); build(1,1,N); for(i=0;i<M;i++) { scanf("%ld %ld %ld",&A,&B,&K); updateST(1,1,N,A,B,K); } //Finding maximum element in range[1,N]] cout<<query2(1,1,N,1,N); return 0; }

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• variables used in inner queries

  - by wcpro

  im trying to build a query that has something like this select id, (select top 1 create_date from table2 where table1id = t1.id and status = 'success') [last_success_date], (select count(*) from table2 where table1id = t1.id and create_date > [last_success_date]) [failures_since_success] from table1 t1 as you can see the [last_Success_Date] is not within the scope of the second query, and i was wondering how i could access that value in other queries without having to rerun it?

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• SQL Server Management Studio Express - include date/time in Results or Messages

  - by Shevek

  In SQL Server Management Studio Express 2008 is it possible to output the date and time that a query completed in the Results or Messages windows? (without having to manually add a SELECT Getdate() to every query)

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• E-Business Suite Certified with DB 11.2.0.2 on HP-UX Itanium and IBM AIX on Power

  - by Steven Chan

  As a follow-on to our previous certification announcement, Oracle Database 11g Release 2 (11.2.0.2) s now certified with Oracle E-Business Suite Release 12 (12.0.x and 12.1.x) and 11i (11.5.10.2 + ATG PF.H RUP 6 and higher) on the following additional platforms:Oracle E-Business Suite Release 12HP-UX Itanium (11.31) IBM AIX on Power Systems (64-bit) (5.3, 6.1) Oracle E-Business Suite Release 11iIBM AIX on Power Systems (64-bit) (5.3, 6.1)

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• Cheap dvr media server

  - by Tester101

  I would like to build a new computer to be used as a DVR and media server. I am thinking of using mythtv as the DVR software, but short of that decision I am completely open to suggestions. Requirements: Must be cheap. Must have low power consumption (since it will always be on). Should be quiet. Should be small. I'm really not sure where to start with this project, and am open to any hardware/software suggestions. Is it possible to build a small quiet and cheap system? *Keep in mind I am working on this project because I am tired of Cable rate increases, but I can't imagine living without a DVR so cost is very important and I would like the system to be sub $200.00. The system also needs to handle the new digital broadcast system. Thanks for the help,

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• LCD monitor flickering

  - by stickmangumby

  I've recently got an LCD monitor and it is occasionally 'flickering' colors very noticeably. It's not a new monitor, but the person I'm borrowing it from hasn't had any trouble with it. The flickering occurs across operating systems and screen resolutions. I'm pretty sure it's related to dirty power - it often happens when fluorescent lights get turned on or the fridge starts, but not always. Is this likely to be the cause of the problem? Is there any good way to test this? Is there anything that can be done about bad grounding?

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• Gateway SX2300-01u CPU/PSU issues

  - by Vlad

  I have a 2-yr-old Gateway SX2300-01u with an AMD Phenom X3 8550 that I feel has about a year or so of life left, but I am having a couple of hardware issues that I have not been able to resolve. First, the power supply fan sounds like much louder than before and the PSU itself is really hot. The PSU model (Liteon PS 5221-06) is not available at a reasonable price; are there any good alternatives? Could I replace just the PSU fan? Also, the CPU fan failed sometime back, but my replacement, which supposedly fits the MB (Socket AM2+) doesn't actually fit properly. Any idea why?

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• LSI RAID-on-chip with RAID6 over two SAS links goes red when HDD enclosure is powered cycled; how to recover?

  - by GregC

  I have a RAID6 array managed by LSI 9286-8e card. I also have Sans Digital 24-bay NexentaSTOR JBOD enclosure with SAS extender built-in. They are connected to separate UPS devices. Normally, I'd shut down the PC, leaving RAID6 in healthy state. But today the power to JBOD enclosure was cut but PC kept running. After restarting the PC, all disks in RAID6 have lit up RED, and the only option in LSI MegaRAID manager app was to reset each disk to unassigned, thereby loosing all data on RAID6 array. Thankfully, I am only testing, but how would I recover if this were to happen in production?

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• PSU requirement question for my PC setup.

  - by user69474

  I understand that sometimes there may be a situation where the PSU is way more than required but in this case of mine, I'm not too sure. Sometimes when I play games, my computer will crash and restarts itself, 10 mins into the game. Once I received a message that says something like the power is overheating or something like that. Ok, so I have a 500W PSU. I have: 1x Internal DVD writer 1x SATA 250GB HD 1x Nvidia 8500 GT 2GB RAM. As I'm planning to get an additional 250GB SATA HD, I wonder if I need to increase my PSU as well -- in full knowledge of the previous crashes experienced before. Should I upgrade my PSU to 650W perhaps, or is that excessive?

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• What is polarity for an unmarked USB hub?

  - by Feral Oink

  On my USB hub where the power supply plugs in, the polarity is unmarked (I got it used, from my brother's friend). I need to know what the polarity should be. I don't think it makes a difference about the brand. Could someone who has a USB hub tell me what the polarity markings are? This is why I need to know about the polarity: Usually the center pin is positive and the outer pin is negative. But I'm not sure with this, and want to be certain before I plug anything into it.

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• Why would only the cpu fan not spin and no video displayed?

  - by Patrick

  I just built a new computer and when I first powered it on I got a continuous beeping which according to the manual means a power failure. After moving the voltage switch to the left a little I was able to get the beeping to stop. Even after the stopping though the CPU fan doesn't spin, and there is no display on the monitor. All the other fans and lights come on in the computer though, the DVD drive is working and ejects the tray, and the hard drive sounds like it spins up. Has anyone seen this before and know what is wrong or what has failed?

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• powertop keeps telling me to turn off the same thing, over and over

  - by Rory McCann

  I am running an ubuntu lucid laptop on battery. I want to make my power last as long as possible. Aswell as the normal things like turn down screen brightness, and turn off wifi, I'm using powertop. It will sometimes tell me things, e.g.: Suggestion: Enable USB autosuspend by pressing the U key OK, I press the U key to do that. However a few minutes later it will give me the same suggestion, it's as if it never enabled USB autosuspend the first time. It does this for other things aswell, not just USB autosuspend. e.g. it'll give me this message frequently: An audio device is active 100.0% of the time: hwC0D1 LSI ID 1040 Q - Quit R - Refresh A - Turn HD audio powersave on Is there anything I can do to make these choices 'stick'? Or do I have some unfortunatle hardware that won't obey linux? (If so, is there any way to confirm this?)

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• How tot track which program causes my harddrive to spin up

  - by Andreas

  I have a strange problem: Every half hour one of my hard disks gets powered on again. I recognize this by the sound of a hard disk spinning up. So far I was not able to track which program could cause this. I ran Process Monitor to see whether there is an I/O peak coinciding with the spin-up. I checked Windows event viewer if there is an appropriate event at the same time Any ideas other than the usual disabling-services/programs etc. (which would be my next investigation step)? Also, it would be helpful to have a program that shows the current power status of all my drives, if there is one. Harddisk Sentinel unfortunately cannot do the job because it powers on all drives upon start and prevents their going into sleep mode. Thanks in advance. :)

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• How have you saved green by going green?

  - by Bob

  For the purpose of this question, I am interested in server/datacenter related hardware. Have you had any measureable amount of ROI by swapping existing hardware to more "green" or energy efficient hardware? For example, VMWare says you can reduce energy consumption by up to 80% by using virtualization. I have also heard of a cooling solution from HP which is suppose to reduce a small amount of engery usage (<25% I think). Google has also done something by integrating a UPS into their power supplies to reduce energy consumption. Any real world experiences would be great, but if you have any details on initial cost, savings and pay off time about what changes were make that would fantastic. I am not only interested in virtualization, I am interested in anything.

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• Is it possible (and safe/reliable/non-damaging) to use a 20-pin ATX PSU with a 24-pin ATX motherboar

  - by Legooolas

  I have a reasonably-decent old 20-pin PSU which I want to use on a newer 24-pin ATX motherboard. I see that the ATX page on wikipedia mentions that 24-pin ATX is backward-compatible, and I can find 20-to-24 pin adapters to buy for a couple of dollars/pounds at lots of places, but I can't find any mention of restrictions on the use of these. Will this work on any motherboard, or is it a per-motherboard compatibility question? Are there any other restrictions like the level of power available (and hence the additional 4 pins with +12, +5 and +3.3V lines which are already on other pins)?

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• Can I replace a broken PSU with one of a smaller size?

  - by Carson Myers

  I have a broken OEM power supply unit that is cooked. I'm browsing online to find a replacement and am happy to see that they don't cost too much -- the only thing is they all seem to have varying sizes. Is it a problem if I get a PSU that is smaller than the original one? This is going in an HP Pavillion a000, it's about five and a half years old -- I don't know if that means anything, I just thought there might be some recent standardized dimensions for PSUs or something. No idea.

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• Motherboard/PSU crippling USB and Sata

  - by celebdor

  I very recently bought a new desktop computer. The motherboard is: Z77MX-D3H and the power supply is ocz zs series 550w. The issue I have is that once I boot to the operating system (I have tried with fedora and Ubuntu with kernels 2.6.38 - 3.4.0), my hard drive (2.5" Magnetic) occasionally makes a power switch noise and it resets. Needless to say, when this drive is the OS drive, the OS crashes. I also have a SSD that works fine with the same OS configurations, but if I have the magnetic hard drive attached as second drive, it works erratically and the reconnects result in corrupted data. I also noticed that whenever I plug an external hard drive USB2.0 or USB3.0 to the computer the issue with the reconnects is even worse: [ 52.198441] sd 7:0:0:0: [sdc] Spinning up disk... [ 57.955811] usb 4-3: USB disconnect, device number 3 [ 58.023687] .ready [ 58.023914] sd 7:0:0:0: [sdc] READ CAPACITY(16) failed [ 58.023919] sd 7:0:0:0: [sdc] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 58.023932] sd 7:0:0:0: [sdc] Sense not available. [ 58.024061] sd 7:0:0:0: [sdc] READ CAPACITY failed [ 58.024063] sd 7:0:0:0: [sdc] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 58.024064] sd 7:0:0:0: [sdc] Sense not available. [ 58.024099] sd 7:0:0:0: [sdc] Write Protect is off [ 58.024101] sd 7:0:0:0: [sdc] Mode Sense: 00 00 00 00 [ 58.024135] sd 7:0:0:0: [sdc] Asking for cache data failed [ 58.024137] sd 7:0:0:0: [sdc] Assuming drive cache: write through [ 58.024400] sd 7:0:0:0: [sdc] READ CAPACITY(16) failed [ 58.024402] sd 7:0:0:0: [sdc] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 58.024405] sd 7:0:0:0: [sdc] Sense not available. [ 58.024448] sd 7:0:0:0: [sdc] READ CAPACITY failed [ 58.024450] sd 7:0:0:0: [sdc] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 58.024451] sd 7:0:0:0: [sdc] Sense not available. [ 58.024469] sd 7:0:0:0: [sdc] Asking for cache data failed [ 58.024471] sd 7:0:0:0: [sdc] Assuming drive cache: write through [ 58.024472] sd 7:0:0:0: [sdc] Attached SCSI disk [ 58.407725] usb 4-3: new SuperSpeed USB device number 4 using xhci_hcd [ 58.424921] scsi8 : usb-storage 4-3:1.0 [ 59.424185] scsi 8:0:0:0: Direct-Access WD My Passport 0740 1003 PQ: 0 ANSI: 6 [ 59.424406] scsi 8:0:0:1: Enclosure WD SES Device 1003 PQ: 0 ANSI: 6 [ 59.425098] sd 8:0:0:0: Attached scsi generic sg2 type 0 [ 59.425176] ses 8:0:0:1: Attached Enclosure device [ 59.425248] ses 8:0:0:1: Attached scsi generic sg3 type 13 [ 61.845836] sd 8:0:0:0: [sdc] 976707584 512-byte logical blocks: (500 GB/465 GiB) [ 61.845838] sd 8:0:0:0: [sdc] 4096-byte physical blocks [ 61.846336] sd 8:0:0:0: [sdc] Write Protect is off [ 61.846338] sd 8:0:0:0: [sdc] Mode Sense: 47 00 10 08 [ 61.846718] sd 8:0:0:0: [sdc] No Caching mode page present [ 61.846720] sd 8:0:0:0: [sdc] Assuming drive cache: write through [ 61.848105] sd 8:0:0:0: [sdc] No Caching mode page present [ 61.848106] sd 8:0:0:0: [sdc] Assuming drive cache: write through [ 61.857147] sdc: sdc1 [ 61.858915] sd 8:0:0:0: [sdc] No Caching mode page present [ 61.858916] sd 8:0:0:0: [sdc] Assuming drive cache: write through [ 61.858918] sd 8:0:0:0: [sdc] Attached SCSI disk [ 69.875809] usb 4-3: USB disconnect, device number 4 [ 70.275816] usb 4-3: new SuperSpeed USB device number 5 using xhci_hcd [ 70.293063] scsi9 : usb-storage 4-3:1.0 [ 71.292257] scsi 9:0:0:0: Direct-Access WD My Passport 0740 1003 PQ: 0 ANSI: 6 [ 71.292505] scsi 9:0:0:1: Enclosure WD SES Device 1003 PQ: 0 ANSI: 6 [ 71.293527] sd 9:0:0:0: Attached scsi generic sg2 type 0 [ 71.293668] ses 9:0:0:1: Attached Enclosure device [ 71.293758] ses 9:0:0:1: Attached scsi generic sg3 type 13 [ 73.323804] usb 4-3: USB disconnect, device number 5 [ 101.868078] ses 9:0:0:1: Device offlined - not ready after error recovery [ 101.868124] ses 9:0:0:1: Failed to get diagnostic page 0x50000 [ 101.868131] ses 9:0:0:1: Failed to bind enclosure -19 [ 101.868288] sd 9:0:0:0: [sdc] READ CAPACITY(16) failed [ 101.868292] sd 9:0:0:0: [sdc] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 101.868296] sd 9:0:0:0: [sdc] Sense not available. [ 101.868428] sd 9:0:0:0: [sdc] READ CAPACITY failed [ 101.868434] sd 9:0:0:0: [sdc] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 101.868439] sd 9:0:0:0: [sdc] Sense not available. [ 101.868468] sd 9:0:0:0: [sdc] Write Protect is off [ 101.868473] sd 9:0:0:0: [sdc] Mode Sense: 00 00 00 00 [ 101.868580] sd 9:0:0:0: [sdc] Asking for cache data failed [ 101.868584] sd 9:0:0:0: [sdc] Assuming drive cache: write through [ 101.868845] sd 9:0:0:0: [sdc] READ CAPACITY(16) failed [ 101.868849] sd 9:0:0:0: [sdc] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 101.868854] sd 9:0:0:0: [sdc] Sense not available. [ 101.868894] sd 9:0:0:0: [sdc] READ CAPACITY failed [ 101.868898] sd 9:0:0:0: [sdc] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 101.868903] sd 9:0:0:0: [sdc] Sense not available. [ 101.868961] sd 9:0:0:0: [sdc] Asking for cache data failed [ 101.868966] sd 9:0:0:0: [sdc] Assuming drive cache: write through [ 101.868969] sd 9:0:0:0: [sdc] Attached SCSI disk Now, if I plug the same drive to the powered usb 2.0 hub of my monitor, the issue is not reproduced (at least on a 20h long operation). Also the issue of the usb reconnects is less frequent if the hard drive is plugged before I switch on the computer. Does anybody have some advice as to what I could do? Which is the faulty part/s that I should replace? As for me, I really don't know if to point my finger to the PSU or the Motherboard (I have updated to the latest firmware and checked the BIOS settings several times). EDIT: The reconnects are happening both in the Sata connected drives and the USBX connected drives.

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• Hot video card in server

  - by DougN

  Not sure if this belongs here or Superuser (I looked at Superuser -- suspect there are more hardware gurus here). I have a server that sits in a cabinet. It's connected to a small screen that is normally off. However, the video card is running at about 210 F all the time. The rest of the PC is pretty cool (getting temps from SpeedFan). Any thoughts on a way to quiet/calm/cool the video card since it's never really doing anything anyway? I'm usually logged out on the server, and no screen saver defined. Windows is already set to turn off the screen for power saving at 5 minutes.

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• Non-USB powered laptop cooling pad?

  - by Andrei Rinea

  On my laptop (el-cheapo but pretty good) I have all my 3 USB ports occupied by devices in use (external mouse, external keyboard, 3G internet/flash drive/external hard drive/etc). I want a cooling pad for my hard-worked laptop but all seem to be powered by USB... This laptop is mainly stationary. Either is available a solution to power the USB-powered cooling pad other than connecting it to the laptop... ... either is there a non-USB powered laptop cooling pad?

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• HP proliant dl360 g5 fails to reboot

  - by user1039384

  Some history of this also available here. As of my latest update on the forum linked above, now cold reboot as well as hard reset and following boot for my proliant dl360 g5 works as expected and successfully boot the system. However, soft-reboot results in internal health indicator turning RED on the front and long beeps every around 6seconds until I either cold reboot or press and hold the power button. A summary of system state when this happens: Internal Health led indicator: RED External Health led indicator: Green No led next to any component is red or amber No POST message neither on the video output nor on IML logs (verified both at the time issue occures and after cold reboot that boots the system successfully). Any thoughts please share. I hope we can knock this issue down together with your help!

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• USB port not recognising mouse on first bootup

  - by Pacifika

  On a computer here when first powered on the USB wired mouse is not recognised. The light under the mouse is not lit up. Other usb hub's and keyboards work fine. Disconnecting it and reconnecting it fixes the issue, even after a restart - after the pc is switched off for a length of time (for example overnight) the problem reappears. I swapped the mouse, updated the bios and installed updated intellimouse drivers, turned of power saving on the usb ports. Any ideas?

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• Computer cables explained

  - by Robert English

  I've noticed lately that places to learn about both power supply cables and also peripherals and fans aren't that easy to find. There's very little information available that gives detailed explanations of what cables are used inside a computer. What I found was very dated and often lacked detailed explanations. For someone planning out their first build it would be great way for this to be explained all in one place, like here! Important things to know about cables and connections in a computer? What are their names? Where do they connect to and why? What typical Voltages do they output? Changing Voltages for Overclocking? Please refernce PSU cables(Full modular, Modular and Non-Modular,24-pin, 20+4-pin etc), SATA(I, II, III), Molex etc. EDIT: Forgot to mention any information about PSU rails would also be appreciated :)

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• Options for connecting an external disk to an old laptop

  - by agnul

  I've tried connecting a 2.5" external drive to an old laptop which has only USB 1. The LED on the disk lights up, but the disk doesn't seem to spin up. Since the same disk works fine on a newer laptop my guess is that the old one doesn't output enough power on the USB port. Besides looking for an external drive with its own PSU, what would you suggest? Will one of those USB cables with two connectors work? What about a powered USB hub?

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