Screen doesn't dim on Compaq Presario V3010US

This is on Gutsy AMD64, though it was also a problem for me on Feisty i386.

Have you tried Hardy yet?

Yes, I'm using Hardy, and the problem is the same.

I think it would be helpful if you'd attach the output of sudo lspci -vvnn. Thanks!

Okay, here's the output:

00:00.0 RAM memory [0500]: nVidia Corporation C51 Host Bridge [10de:02f0] (rev a2)
 Subsystem: Hewlett-Packard Company Unknown device [103c:30b5]
 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
 Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
 Latency: 0
 Capabilities: [44] HyperTransport: Slave or Primary Interface
  Command: BaseUnitID=0 UnitCnt=15 MastHost- DefDir- DUL-
  Link Control 0: CFlE+ CST- CFE- <LkFail- Init+ EOC- TXO- <CRCErr=0 IsocEn- LSEn+ ExtCTL- 64b-
  Link Config 0: MLWI=16bit DwFcIn- MLWO=16bit DwFcOut- LWI=16bit DwFcInEn- LWO=16bit DwFcOutEn-
  Link Control 1: CFlE+ CST- CFE- <LkFail- Init+ EOC- TXO- <CRCErr=0 IsocEn- LSEn+ ExtCTL- 64b-
  Link Config 1: MLWI=16bit DwFcIn- MLWO=16bit DwFcOut- LWI=8bit DwFcInEn- LWO=8bit DwFcOutEn-
  Revision ID: 1.03
  Link Frequency 0: 800MHz
  Link Error 0: <Prot- <Ovfl- <EOC- CTLTm-
  Link Frequency Capability 0: 200MHz+ 300MHz+ 400MHz+ 500MHz+ 600MHz+ 800MHz+ 1.0GHz+ 1.2GHz- 1.4GHz- 1.6GHz- Vend-
  Feature Capability: IsocFC+ LDTSTOP+ CRCTM- ECTLT- 64bA- UIDRD-
  Link Frequency 1: 800MHz
  Link Error 1: <Prot- <Ovfl- <EOC- CTLTm-
  Link Frequency Capability 1: 200MHz+ 300MHz+ 400MHz+ 500MHz+ 600MHz+ 800MHz+ 1.0GHz+ 1.2GHz- 1.4GHz- 1.6GHz- Vend-
  Error Handling: PFlE+ OFlE+ PFE- OFE- EOCFE- RFE- CRCFE- SERRFE- CF- RE- PNFE- ONFE- EOCNFE- RNFE- CRCNFE- SERRNFE-
  Prefetchable memory behind bridge Upper: 00-00
  Bus Number: 00
 Capabilities: [e0] HyperTransport: MSI Mapping

00:00.1 RAM memory [0500]: nVidia Corporation C51 Memory Controller 0 [10de:02fa] (rev a2)
 Subsystem: Hewlett-Packard Company Unknown device [103c:30b5]
 Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
 Status: Cap- 66MHz+ UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-

00:00.2 RAM memory [0500]: nVidia Corporation C51 Memory Controller 1 [10de:02fe] (rev a2)
 Subsystem: Hewlett-Packard Company Unknown device [103c:30b5]
 Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
 Status: Cap- 66MHz+ UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-

00:00.3 RAM memory [0500]: nVidia Corporation C51 Memory Controller 5 [10de:02f8] (rev a2)
 Subsystem: Hewlett-Packard Company Unknown device [103c:30b5]
 Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
 Status: Cap- 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-

00:00.4 RAM memory [0500]: nVidia Corporation C51 Memory Controller 4 [10de:02f9] (rev a2)
 Subsystem: Hewlett-Packard Company Unknown device [103c:30b5]
 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
 Status: Cap- 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
 Latency: 0

00:00.5 RAM memory [0500]: nVidia Corporation C51 Host Bridge [10de:02ff] (rev a2)
 Subsystem: Hewlett-Packard Company Unknown device [103c:30b5]
 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB...

Thank you for taking the time to report this bug and helping to make Ubuntu better. You reported this bug a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue for you. Can you try with the latest Ubuntu release? Thanks in advance.

assigning to the hotkey-setup package

I believe this was a kernel issue, but in any case, it's no longer a problem in Intrepid. Thanks for checking back about it.

This bug report is being closed due to your last comment regarding this being fixed with an update. For future reference you can manage the status of your own bugs by clicking on the current status in the yellow line and then choosing a new status in the revealed drop down box. You can learn more about bug statuses at https://wiki.ubuntu.com/Bugs/Status . Thank you again for taking the time to report this bug and helping to make Ubuntu better. Feel free to submit any future bugs you may find.