Re: Lenovo T500 hang - down to DRM
On Fri, 10 Jun 2016, Stephen Borrill wrote: On Sun, 5 Jun 2016, Michael van Elst wrote: On Sat, Jun 04, 2016 at 04:15:15PM +0100, Stephen Borrill wrote: Under Windows it is cool and I get 6-hour battery life... Does it have an ATI graphics card and also Intel graphics? Yes. And that's the root of the hanging problem. If Integrated graphics (Intel) or Discrete graphics (ATI) are selected in the BIOS, the machine boots. With Intel, DRM attaches very early on: pci0 at mainbus0 bus 0: configuration mode 1 pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok pchb0 at pci0 dev 0 function 0: vendor 0x8086 product 0x2a40 (rev. 0x07) agp0 at pchb0: G4X-family chipset agp0: detected 32252k stolen memory agp0: aperture at 0xd000, size 0x1000 i915drmkms0 at pci0 dev 2 function 0: vendor 0x8086 product 0x2a42 (rev. 0x07) drm: Memory usable by graphics device = 512M drm: Supports vblank timestamp caching Rev 2 (21.10.2013). drm: Driver supports precise vblank timestamp query. i915drmkms0: interrupting at ioapic0 pin 16 (i915) intelfb0 at i915drmkms0 i915drmkms0: info: registered panic notifier With ATI, DRM attaches much, much later on: pad0: outputs: 44100Hz, 16-bit, stereo audio1 at pad0: half duplex, playback, capture boot device: wd0 root on wd0a dumps on wd0b root file system type: ffs drm: initializing kernel modesetting (RV635 0x1002:0x9591 0x17AA:0x2117). drm: register mmio base: 0xcfff drm: register mmio size: 65536 drm kern info: ATOM BIOS: M86M radeon0: info: VRAM: 256M 0x - 0x0FFF (256M used) radeon0: info: GTT: 512M 0x1000 - 0x2FFF Note that this is around the point where the machine hangs. If Switchable graphics is enabled in the BIOS (which is the default it likes to keep resetting back to), the hang occurs. My theory is that i915drmkms0 attaches early and then the later probe for radeon0 (and perhaps even trying to double up on DRM?) is causing the hang. When the device is hidden or disabled by the BIOS, it is OK. Between RC2 (OK) and RC3 (hang) there were a number of changes to the radeon and i915 drm code. Not had chance to test which yet. dmesgs here: http://dmesgd.nycbug.org/index.cgi?do=view&id=2980 http://dmesgd.nycbug.org/index.cgi?do=view&id=2981 -- Stephen
Re: Lenovo T500 hang - down to DRM
On Sun, 5 Jun 2016, Michael van Elst wrote: On Sat, Jun 04, 2016 at 04:15:15PM +0100, Stephen Borrill wrote: Under Windows it is cool and I get 6-hour battery life... Does it have an ATI graphics card and also Intel graphics? Yes. And that's the root of the hanging problem. If Integrated graphics (Intel) or Discrete graphics (ATI) are selected in the BIOS, the machine boots. With Intel, DRM attaches very early on: pci0 at mainbus0 bus 0: configuration mode 1 pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok pchb0 at pci0 dev 0 function 0: vendor 0x8086 product 0x2a40 (rev. 0x07) agp0 at pchb0: G4X-family chipset agp0: detected 32252k stolen memory agp0: aperture at 0xd000, size 0x1000 i915drmkms0 at pci0 dev 2 function 0: vendor 0x8086 product 0x2a42 (rev. 0x07) drm: Memory usable by graphics device = 512M drm: Supports vblank timestamp caching Rev 2 (21.10.2013). drm: Driver supports precise vblank timestamp query. i915drmkms0: interrupting at ioapic0 pin 16 (i915) intelfb0 at i915drmkms0 i915drmkms0: info: registered panic notifier With ATI, DRM attaches much, much later on: pad0: outputs: 44100Hz, 16-bit, stereo audio1 at pad0: half duplex, playback, capture boot device: wd0 root on wd0a dumps on wd0b root file system type: ffs drm: initializing kernel modesetting (RV635 0x1002:0x9591 0x17AA:0x2117). drm: register mmio base: 0xcfff drm: register mmio size: 65536 drm kern info: ATOM BIOS: M86M radeon0: info: VRAM: 256M 0x - 0x0FFF (256M used) radeon0: info: GTT: 512M 0x1000 - 0x2FFF Note that this is around the point where the machine hangs. If Switchable graphics is enabled in the BIOS (which is the default it likes to keep resetting back to), the hang occurs. My theory is that i915drmkms0 attaches early and then the later probe for radeon0 (and perhaps even trying to double up on DRM?) is causing the hang. When the device is hidden or disabled by the BIOS, it is OK. Between RC2 (OK) and RC3 (hang) there were a number of changes to the radeon and i915 drm code. Not had chance to test which yet. -- Stephen
Re: Lenovo T500 hang
On 04/06/2016 16:15, Stephen Borrill wrote: > On Fri, 3 Jun 2016, Michael van Elst wrote: >> net...@precedence.co.uk (Stephen Borrill) writes: >> >>> Does it run at a sensible temperature? Mine runs very hot and runs the >>> battery down very quickly. >> >> Probably needs some cleaning and/or there is a problem with the >> fan and heat-pipes. > > Under Windows it is cool and I get 6-hour battery life... Even when mine was brand new, working on the train it would just about make the almost 2 hour journey using Windows 7. But then I did have a SQL server under a reasonable load while hacking front end stuff for it. Roy
Re: Lenovo T500 hang
On Sat, Jun 04, 2016 at 04:15:15PM +0100, Stephen Borrill wrote: > Under Windows it is cool and I get 6-hour battery life... Does it have an ATI graphics card and also Intel graphics? Greetings, -- Michael van Elst Internet: mlel...@serpens.de "A potential Snark may lurk in every tree."
Re: Lenovo T500 hang
On Fri, 3 Jun 2016, Michael van Elst wrote: net...@precedence.co.uk (Stephen Borrill) writes: Does it run at a sensible temperature? Mine runs very hot and runs the battery down very quickly. Probably needs some cleaning and/or there is a problem with the fan and heat-pipes. Under Windows it is cool and I get 6-hour battery life... -- Stephen
Re: Lenovo T500 hang
net...@precedence.co.uk (Stephen Borrill) writes: >Does it run at a sensible temperature? Mine runs very hot and runs the >battery down very quickly. Probably needs some cleaning and/or there is a problem with the fan and heat-pipes. -- -- Michael van Elst Internet: mlel...@serpens.de "A potential Snark may lurk in every tree."
Re: Lenovo T500 hang
On 3 June 2016 at 10:11, Stephen Borrill wrote: > > On Thu, 2 Jun 2016, Roy Marples wrote: >> >> On 2016-06-01 10:54, Stephen Borrill wrote: >>> >>> Somewhere after 7.0_RC2, a problem started where the machine hangs >>> right at the end of the kernel boot just before it prints the boot >>> device: >>> >>> pad0: outputs: 44100Hz, 16-bit, stereo >>> audio1 at pad0: half duplex, playback, capture >>> *** HANGS HERE *** >>> boot device: wd0 >>> root on wd0a dumps on wd0b >>> >>> The only thing to do is to power the machine off. This happens with >>> all later kernels (including -current). >>> >>> I've not had chance to bisect the sources yet as I need to use the >>> machine for real work (and running NetBSD 7 on it also makes it so hot >>> it burns my legs). >>> >>> I think a few users (and developers) have Lenovo T500 laptops. Does >>> any recent NetBSD work for them? >> >> >> I have a T500 which is my main NetBSD dev machine. > > > Do you have a dmesg? Perhaps yours is a model without switchable graphics or > the 3G modem, etc. > >> I haven't updated the kernel in a month or so, but it's been running >> -current very well. > > > Does it run at a sensible temperature? Mine runs very hot and runs the > battery down very quickly. > >> I don't recall if it ever ran anything earlier than a 7.0 release though. > > > I've been using mine since the netbsd-5 and this problem just started. As a random thought has the machdep.est.frequency settings changed for it since netbsd-5? - might it possibly be picking a higher default value? Do you use sysutils/estd (I have a T420s and that definitely helped with how often my CPU fan maxes out)
Re: Lenovo T500 hang
On Thu, 2 Jun 2016, Roy Marples wrote: On 2016-06-01 10:54, Stephen Borrill wrote: Somewhere after 7.0_RC2, a problem started where the machine hangs right at the end of the kernel boot just before it prints the boot device: pad0: outputs: 44100Hz, 16-bit, stereo audio1 at pad0: half duplex, playback, capture *** HANGS HERE *** boot device: wd0 root on wd0a dumps on wd0b The only thing to do is to power the machine off. This happens with all later kernels (including -current). I've not had chance to bisect the sources yet as I need to use the machine for real work (and running NetBSD 7 on it also makes it so hot it burns my legs). I think a few users (and developers) have Lenovo T500 laptops. Does any recent NetBSD work for them? I have a T500 which is my main NetBSD dev machine. Do you have a dmesg? Perhaps yours is a model without switchable graphics or the 3G modem, etc. I haven't updated the kernel in a month or so, but it's been running -current very well. Does it run at a sensible temperature? Mine runs very hot and runs the battery down very quickly. I don't recall if it ever ran anything earlier than a 7.0 release though. I've been using mine since the netbsd-5 and this problem just started. -- Stephen
Re: Lenovo T500 hang
On 2016-06-01 10:54, Stephen Borrill wrote: Somewhere after 7.0_RC2, a problem started where the machine hangs right at the end of the kernel boot just before it prints the boot device: pad0: outputs: 44100Hz, 16-bit, stereo audio1 at pad0: half duplex, playback, capture *** HANGS HERE *** boot device: wd0 root on wd0a dumps on wd0b The only thing to do is to power the machine off. This happens with all later kernels (including -current). I've not had chance to bisect the sources yet as I need to use the machine for real work (and running NetBSD 7 on it also makes it so hot it burns my legs). I think a few users (and developers) have Lenovo T500 laptops. Does any recent NetBSD work for them? I have a T500 which is my main NetBSD dev machine. I haven't updated the kernel in a month or so, but it's been running -current very well. I don't recall if it ever ran anything earlier than a 7.0 release though. Roy
