* Re: 3.5.x boot hang after conflicting fb hw usage <driver> vs VESA VGA - removing generic driver [not found] <1345242330.3841.8.camel@fedora64.linuxtx.org> @ 2012-08-17 22:28 ` Randy Dunlap 2012-08-17 22:54 ` Dave Airlie 0 siblings, 1 reply; 9+ messages in thread From: Randy Dunlap @ 2012-08-17 22:28 UTC (permalink / raw) To: Justin M. Forbes; +Cc: linux-kernel, kernel-team, dri-devel On 08/17/2012 03:25 PM, Justin M. Forbes wrote: > for <driver>, we have verified cases on inteldrmfb, radeondrmfb, and > cirrusdrmfb. > > This is the last message displayed before the system hangs. This seems > to be hitting a large number of users in Fedora, though certainly not > everyone. This started happening with the 3.5 updates, and is still an > issue. It appears to be a race condition, because various things have > allowed boot to continue for some users, though there is no clear work > around. Has anyone else run across this? Any ideas. For more > background we have the following bugs: > > inteldrmfb: > https://bugzilla.redhat.com/show_bug.cgi?id=843826 > > radeondrmfb: > https://bugzilla.redhat.com/show_bug.cgi?id=845745 > > cirrusdrmfb <kvm>: > https://bugzilla.redhat.com/show_bug.cgi?id=843860 > > It should be noted that the conflicting fb hw usage message is not new, > it has been around for a while, but this is the last message seen before > the hang. Hi, (adding dri-devel mailing list) I started seeing this problem on 3.5-rc6. AFAICT, the system is not actually hung, it's just that no output is showing up on the real (physical) output device (display) -- it's going somewhere else (or to the bit bucket). -- ~Randy ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: 3.5.x boot hang after conflicting fb hw usage <driver> vs VESA VGA - removing generic driver 2012-08-17 22:28 ` 3.5.x boot hang after conflicting fb hw usage <driver> vs VESA VGA - removing generic driver Randy Dunlap @ 2012-08-17 22:54 ` Dave Airlie 2012-08-17 22:55 ` Dave Airlie 0 siblings, 1 reply; 9+ messages in thread From: Dave Airlie @ 2012-08-17 22:54 UTC (permalink / raw) To: Randy Dunlap; +Cc: Justin M. Forbes, linux-kernel, kernel-team, dri-devel On Sat, Aug 18, 2012 at 8:28 AM, Randy Dunlap <rdunlap@xenotime.net> wrote: > On 08/17/2012 03:25 PM, Justin M. Forbes wrote: > >> for <driver>, we have verified cases on inteldrmfb, radeondrmfb, and >> cirrusdrmfb. >> >> This is the last message displayed before the system hangs. This seems >> to be hitting a large number of users in Fedora, though certainly not >> everyone. This started happening with the 3.5 updates, and is still an >> issue. It appears to be a race condition, because various things have >> allowed boot to continue for some users, though there is no clear work >> around. Has anyone else run across this? Any ideas. For more >> background we have the following bugs: >> >> inteldrmfb: >> https://bugzilla.redhat.com/show_bug.cgi?id=843826 >> >> radeondrmfb: >> https://bugzilla.redhat.com/show_bug.cgi?id=845745 >> >> cirrusdrmfb <kvm>: >> https://bugzilla.redhat.com/show_bug.cgi?id=843860 >> >> It should be noted that the conflicting fb hw usage message is not new, >> it has been around for a while, but this is the last message seen before >> the hang. > > > Hi, (adding dri-devel mailing list) > > > I started seeing this problem on 3.5-rc6. > > AFAICT, the system is not actually hung, it's just that no output > is showing up on the real (physical) output device (display) -- it's > going somewhere else (or to the bit bucket). > Can we bisect this at all? I worry the intel one will bisect to where we moved the conflict resolution earlier, but I'd like to see if applying that patch earlier causes the issue, since radeon has it. I haven't reproduced this on any hw I own, I also can't get it under qemu. Dave. ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: 3.5.x boot hang after conflicting fb hw usage <driver> vs VESA VGA - removing generic driver 2012-08-17 22:54 ` Dave Airlie @ 2012-08-17 22:55 ` Dave Airlie 2012-08-17 23:05 ` Randy Dunlap 2012-08-20 5:13 ` Randy Dunlap 0 siblings, 2 replies; 9+ messages in thread From: Dave Airlie @ 2012-08-17 22:55 UTC (permalink / raw) To: Randy Dunlap; +Cc: Justin M. Forbes, linux-kernel, kernel-team, dri-devel On Sat, Aug 18, 2012 at 8:54 AM, Dave Airlie <airlied@gmail.com> wrote: > On Sat, Aug 18, 2012 at 8:28 AM, Randy Dunlap <rdunlap@xenotime.net> wrote: >> On 08/17/2012 03:25 PM, Justin M. Forbes wrote: >> >>> for <driver>, we have verified cases on inteldrmfb, radeondrmfb, and >>> cirrusdrmfb. >>> >>> This is the last message displayed before the system hangs. This seems >>> to be hitting a large number of users in Fedora, though certainly not >>> everyone. This started happening with the 3.5 updates, and is still an >>> issue. It appears to be a race condition, because various things have >>> allowed boot to continue for some users, though there is no clear work >>> around. Has anyone else run across this? Any ideas. For more >>> background we have the following bugs: >>> >>> inteldrmfb: >>> https://bugzilla.redhat.com/show_bug.cgi?id=843826 >>> >>> radeondrmfb: >>> https://bugzilla.redhat.com/show_bug.cgi?id=845745 >>> >>> cirrusdrmfb <kvm>: >>> https://bugzilla.redhat.com/show_bug.cgi?id=843860 >>> >>> It should be noted that the conflicting fb hw usage message is not new, >>> it has been around for a while, but this is the last message seen before >>> the hang. >> >> >> Hi, (adding dri-devel mailing list) >> >> >> I started seeing this problem on 3.5-rc6. >> >> AFAICT, the system is not actually hung, it's just that no output >> is showing up on the real (physical) output device (display) -- it's >> going somewhere else (or to the bit bucket). >> > > Can we bisect this at all? > > I worry the intel one will bisect to where we moved the conflict > resolution earlier, but I'd like to see if applying that patch earlier > causes the issue, since radeon has it. > > I haven't reproduced this on any hw I own, I also can't get it under qemu. I'm also wondering whether this grub2 related in some way, grub2 is starting to mess with the graphics adapter pointlessly. Dave. ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: 3.5.x boot hang after conflicting fb hw usage <driver> vs VESA VGA - removing generic driver 2012-08-17 22:55 ` Dave Airlie @ 2012-08-17 23:05 ` Randy Dunlap 2012-08-20 5:13 ` Randy Dunlap 1 sibling, 0 replies; 9+ messages in thread From: Randy Dunlap @ 2012-08-17 23:05 UTC (permalink / raw) To: Dave Airlie; +Cc: Justin M. Forbes, linux-kernel, kernel-team, dri-devel On 08/17/2012 03:55 PM, Dave Airlie wrote: > On Sat, Aug 18, 2012 at 8:54 AM, Dave Airlie <airlied@gmail.com> wrote: >> On Sat, Aug 18, 2012 at 8:28 AM, Randy Dunlap <rdunlap@xenotime.net> wrote: >>> On 08/17/2012 03:25 PM, Justin M. Forbes wrote: >>> >>>> for <driver>, we have verified cases on inteldrmfb, radeondrmfb, and >>>> cirrusdrmfb. >>>> >>>> This is the last message displayed before the system hangs. This seems >>>> to be hitting a large number of users in Fedora, though certainly not >>>> everyone. This started happening with the 3.5 updates, and is still an >>>> issue. It appears to be a race condition, because various things have >>>> allowed boot to continue for some users, though there is no clear work >>>> around. Has anyone else run across this? Any ideas. For more >>>> background we have the following bugs: >>>> >>>> inteldrmfb: >>>> https://bugzilla.redhat.com/show_bug.cgi?id=843826 >>>> >>>> radeondrmfb: >>>> https://bugzilla.redhat.com/show_bug.cgi?id=845745 >>>> >>>> cirrusdrmfb <kvm>: >>>> https://bugzilla.redhat.com/show_bug.cgi?id=843860 >>>> >>>> It should be noted that the conflicting fb hw usage message is not new, >>>> it has been around for a while, but this is the last message seen before >>>> the hang. >>> >>> >>> Hi, (adding dri-devel mailing list) >>> >>> >>> I started seeing this problem on 3.5-rc6. >>> >>> AFAICT, the system is not actually hung, it's just that no output >>> is showing up on the real (physical) output device (display) -- it's >>> going somewhere else (or to the bit bucket). >>> >> >> Can we bisect this at all? I'll try. >> I worry the intel one will bisect to where we moved the conflict >> resolution earlier, but I'd like to see if applying that patch earlier >> causes the issue, since radeon has it. >> >> I haven't reproduced this on any hw I own, I also can't get it under qemu. > > I'm also wondering whether this grub2 related in some way, grub2 is > starting to mess with the graphics adapter pointlessly. I'm using lilo, not grub. -- ~Randy ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: 3.5.x boot hang after conflicting fb hw usage <driver> vs VESA VGA - removing generic driver 2012-08-17 22:55 ` Dave Airlie 2012-08-17 23:05 ` Randy Dunlap @ 2012-08-20 5:13 ` Randy Dunlap 2012-08-20 5:22 ` Dave Airlie 1 sibling, 1 reply; 9+ messages in thread From: Randy Dunlap @ 2012-08-20 5:13 UTC (permalink / raw) To: Dave Airlie; +Cc: Justin M. Forbes, linux-kernel, kernel-team, dri-devel On 08/17/12 15:55, Dave Airlie wrote: > On Sat, Aug 18, 2012 at 8:54 AM, Dave Airlie <airlied@gmail.com> wrote: >> On Sat, Aug 18, 2012 at 8:28 AM, Randy Dunlap <rdunlap@xenotime.net> wrote: >>> On 08/17/2012 03:25 PM, Justin M. Forbes wrote: >>> >>>> for <driver>, we have verified cases on inteldrmfb, radeondrmfb, and >>>> cirrusdrmfb. >>>> >>>> This is the last message displayed before the system hangs. This seems >>>> to be hitting a large number of users in Fedora, though certainly not >>>> everyone. This started happening with the 3.5 updates, and is still an >>>> issue. It appears to be a race condition, because various things have >>>> allowed boot to continue for some users, though there is no clear work >>>> around. Has anyone else run across this? Any ideas. For more >>>> background we have the following bugs: >>>> >>>> inteldrmfb: >>>> https://bugzilla.redhat.com/show_bug.cgi?id=843826 >>>> >>>> radeondrmfb: >>>> https://bugzilla.redhat.com/show_bug.cgi?id=845745 >>>> >>>> cirrusdrmfb <kvm>: >>>> https://bugzilla.redhat.com/show_bug.cgi?id=843860 >>>> >>>> It should be noted that the conflicting fb hw usage message is not new, >>>> it has been around for a while, but this is the last message seen before >>>> the hang. >>> >>> >>> Hi, (adding dri-devel mailing list) >>> >>> >>> I started seeing this problem on 3.5-rc6. >>> >>> AFAICT, the system is not actually hung, it's just that no output >>> is showing up on the real (physical) output device (display) -- it's >>> going somewhere else (or to the bit bucket). >>> >> >> Can we bisect this at all? I guess I'll have to try again. My first attempt did not prove anything, I think because the conflict does not happen 100% of the time (i.e., it feels like a timing problem). >> I worry the intel one will bisect to where we moved the conflict >> resolution earlier, but I'd like to see if applying that patch earlier >> causes the issue, since radeon has it. Do you know of a specific commit that I could revert and test? >> I haven't reproduced this on any hw I own, I also can't get it under qemu. > > I'm also wondering whether this grub2 related in some way, grub2 is > starting to mess with the graphics adapter pointlessly. > > Dave. -- ~Randy ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: 3.5.x boot hang after conflicting fb hw usage <driver> vs VESA VGA - removing generic driver 2012-08-20 5:13 ` Randy Dunlap @ 2012-08-20 5:22 ` Dave Airlie 2012-08-20 22:45 ` Randy Dunlap 0 siblings, 1 reply; 9+ messages in thread From: Dave Airlie @ 2012-08-20 5:22 UTC (permalink / raw) To: Randy Dunlap; +Cc: Justin M. Forbes, linux-kernel, kernel-team, dri-devel On Mon, Aug 20, 2012 at 3:13 PM, Randy Dunlap <rdunlap@xenotime.net> wrote: > On 08/17/12 15:55, Dave Airlie wrote: > >> On Sat, Aug 18, 2012 at 8:54 AM, Dave Airlie <airlied@gmail.com> wrote: >>> On Sat, Aug 18, 2012 at 8:28 AM, Randy Dunlap <rdunlap@xenotime.net> wrote: >>>> On 08/17/2012 03:25 PM, Justin M. Forbes wrote: >>>> >>>>> for <driver>, we have verified cases on inteldrmfb, radeondrmfb, and >>>>> cirrusdrmfb. >>>>> >>>>> This is the last message displayed before the system hangs. This seems >>>>> to be hitting a large number of users in Fedora, though certainly not >>>>> everyone. This started happening with the 3.5 updates, and is still an >>>>> issue. It appears to be a race condition, because various things have >>>>> allowed boot to continue for some users, though there is no clear work >>>>> around. Has anyone else run across this? Any ideas. For more >>>>> background we have the following bugs: >>>>> >>>>> inteldrmfb: >>>>> https://bugzilla.redhat.com/show_bug.cgi?id=843826 >>>>> >>>>> radeondrmfb: >>>>> https://bugzilla.redhat.com/show_bug.cgi?id=845745 >>>>> >>>>> cirrusdrmfb <kvm>: >>>>> https://bugzilla.redhat.com/show_bug.cgi?id=843860 >>>>> >>>>> It should be noted that the conflicting fb hw usage message is not new, >>>>> it has been around for a while, but this is the last message seen before >>>>> the hang. >>>> >>>> >>>> Hi, (adding dri-devel mailing list) >>>> >>>> >>>> I started seeing this problem on 3.5-rc6. >>>> >>>> AFAICT, the system is not actually hung, it's just that no output >>>> is showing up on the real (physical) output device (display) -- it's >>>> going somewhere else (or to the bit bucket). >>>> >>> >>> Can we bisect this at all? > > I guess I'll have to try again. My first attempt did not > prove anything, I think because the conflict does not happen > 100% of the time (i.e., it feels like a timing problem). > >>> I worry the intel one will bisect to where we moved the conflict >>> resolution earlier, but I'd like to see if applying that patch earlier >>> causes the issue, since radeon has it. > > Do you know of a specific commit that I could revert and test? 9f846a16d213523fbe6daea17e20df6b8ac5a1e5 might work, but it just changes the timing mostly. also testing 3.4 with that on top would be good. Dave. ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: 3.5.x boot hang after conflicting fb hw usage <driver> vs VESA VGA - removing generic driver 2012-08-20 5:22 ` Dave Airlie @ 2012-08-20 22:45 ` Randy Dunlap 2012-08-21 0:23 ` Dave Airlie 0 siblings, 1 reply; 9+ messages in thread From: Randy Dunlap @ 2012-08-20 22:45 UTC (permalink / raw) To: Dave Airlie; +Cc: Justin M. Forbes, linux-kernel, kernel-team, dri-devel On 08/19/2012 10:22 PM, Dave Airlie wrote: > On Mon, Aug 20, 2012 at 3:13 PM, Randy Dunlap <rdunlap@xenotime.net> wrote: >> On 08/17/12 15:55, Dave Airlie wrote: >> >>> On Sat, Aug 18, 2012 at 8:54 AM, Dave Airlie <airlied@gmail.com> wrote: >>>> On Sat, Aug 18, 2012 at 8:28 AM, Randy Dunlap <rdunlap@xenotime.net> wrote: >>>>> On 08/17/2012 03:25 PM, Justin M. Forbes wrote: >>>>> >>>>>> for <driver>, we have verified cases on inteldrmfb, radeondrmfb, and >>>>>> cirrusdrmfb. >>>>>> >>>>>> This is the last message displayed before the system hangs. This seems >>>>>> to be hitting a large number of users in Fedora, though certainly not >>>>>> everyone. This started happening with the 3.5 updates, and is still an >>>>>> issue. It appears to be a race condition, because various things have >>>>>> allowed boot to continue for some users, though there is no clear work >>>>>> around. Has anyone else run across this? Any ideas. For more >>>>>> background we have the following bugs: >>>>>> >>>>>> inteldrmfb: >>>>>> https://bugzilla.redhat.com/show_bug.cgi?id=843826 >>>>>> >>>>>> radeondrmfb: >>>>>> https://bugzilla.redhat.com/show_bug.cgi?id=845745 >>>>>> >>>>>> cirrusdrmfb <kvm>: >>>>>> https://bugzilla.redhat.com/show_bug.cgi?id=843860 >>>>>> >>>>>> It should be noted that the conflicting fb hw usage message is not new, >>>>>> it has been around for a while, but this is the last message seen before >>>>>> the hang. >>>>> >>>>> >>>>> Hi, (adding dri-devel mailing list) >>>>> >>>>> >>>>> I started seeing this problem on 3.5-rc6. >>>>> >>>>> AFAICT, the system is not actually hung, it's just that no output >>>>> is showing up on the real (physical) output device (display) -- it's >>>>> going somewhere else (or to the bit bucket). >>>>> >>>> >>>> Can we bisect this at all? >> >> I guess I'll have to try again. My first attempt did not >> prove anything, I think because the conflict does not happen >> 100% of the time (i.e., it feels like a timing problem). >> >>>> I worry the intel one will bisect to where we moved the conflict >>>> resolution earlier, but I'd like to see if applying that patch earlier >>>> causes the issue, since radeon has it. >> >> Do you know of a specific commit that I could revert and test? > > 9f846a16d213523fbe6daea17e20df6b8ac5a1e5 > > might work, but it just changes the timing mostly. > > also testing 3.4 with that on top would be good. That commit doesn't apply cleanly to 3.4, but reverting it on 3.5-rc6 (where I first saw the problem) allows me to boot 3.5-rc6 multiple times without a problem. Maybe Justin can get more stable testing done also.. thanks, -- ~Randy ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: 3.5.x boot hang after conflicting fb hw usage <driver> vs VESA VGA - removing generic driver 2012-08-20 22:45 ` Randy Dunlap @ 2012-08-21 0:23 ` Dave Airlie 2012-08-21 0:58 ` Randy Dunlap 0 siblings, 1 reply; 9+ messages in thread From: Dave Airlie @ 2012-08-21 0:23 UTC (permalink / raw) To: Randy Dunlap; +Cc: Justin M. Forbes, linux-kernel, kernel-team, dri-devel On Tue, Aug 21, 2012 at 8:45 AM, Randy Dunlap <rdunlap@xenotime.net> wrote: > On 08/19/2012 10:22 PM, Dave Airlie wrote: > >> On Mon, Aug 20, 2012 at 3:13 PM, Randy Dunlap <rdunlap@xenotime.net> wrote: >>> On 08/17/12 15:55, Dave Airlie wrote: >>> >>>> On Sat, Aug 18, 2012 at 8:54 AM, Dave Airlie <airlied@gmail.com> wrote: >>>>> On Sat, Aug 18, 2012 at 8:28 AM, Randy Dunlap <rdunlap@xenotime.net> wrote: >>>>>> On 08/17/2012 03:25 PM, Justin M. Forbes wrote: >>>>>> >>>>>>> for <driver>, we have verified cases on inteldrmfb, radeondrmfb, and >>>>>>> cirrusdrmfb. >>>>>>> >>>>>>> This is the last message displayed before the system hangs. This seems >>>>>>> to be hitting a large number of users in Fedora, though certainly not >>>>>>> everyone. This started happening with the 3.5 updates, and is still an >>>>>>> issue. It appears to be a race condition, because various things have >>>>>>> allowed boot to continue for some users, though there is no clear work >>>>>>> around. Has anyone else run across this? Any ideas. For more >>>>>>> background we have the following bugs: >>>>>>> >>>>>>> inteldrmfb: >>>>>>> https://bugzilla.redhat.com/show_bug.cgi?id=843826 >>>>>>> >>>>>>> radeondrmfb: >>>>>>> https://bugzilla.redhat.com/show_bug.cgi?id=845745 >>>>>>> >>>>>>> cirrusdrmfb <kvm>: >>>>>>> https://bugzilla.redhat.com/show_bug.cgi?id=843860 >>>>>>> >>>>>>> It should be noted that the conflicting fb hw usage message is not new, >>>>>>> it has been around for a while, but this is the last message seen before >>>>>>> the hang. >>>>>> >>>>>> >>>>>> Hi, (adding dri-devel mailing list) >>>>>> >>>>>> >>>>>> I started seeing this problem on 3.5-rc6. >>>>>> >>>>>> AFAICT, the system is not actually hung, it's just that no output >>>>>> is showing up on the real (physical) output device (display) -- it's >>>>>> going somewhere else (or to the bit bucket). >>>>>> >>>>> >>>>> Can we bisect this at all? >>> >>> I guess I'll have to try again. My first attempt did not >>> prove anything, I think because the conflict does not happen >>> 100% of the time (i.e., it feels like a timing problem). >>> >>>>> I worry the intel one will bisect to where we moved the conflict >>>>> resolution earlier, but I'd like to see if applying that patch earlier >>>>> causes the issue, since radeon has it. >>> >>> Do you know of a specific commit that I could revert and test? >> >> 9f846a16d213523fbe6daea17e20df6b8ac5a1e5 >> >> might work, but it just changes the timing mostly. >> >> also testing 3.4 with that on top would be good. > > > That commit doesn't apply cleanly to 3.4, but reverting > it on 3.5-rc6 (where I first saw the problem) allows me to boot > 3.5-rc6 multiple times without a problem. > > Maybe Justin can get more stable testing done also.. Randy do you have a vga= on your kernel command line? Dave. ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: 3.5.x boot hang after conflicting fb hw usage <driver> vs VESA VGA - removing generic driver 2012-08-21 0:23 ` Dave Airlie @ 2012-08-21 0:58 ` Randy Dunlap 0 siblings, 0 replies; 9+ messages in thread From: Randy Dunlap @ 2012-08-21 0:58 UTC (permalink / raw) To: Dave Airlie; +Cc: Justin M. Forbes, linux-kernel, kernel-team, dri-devel On 08/20/2012 05:23 PM, Dave Airlie wrote: > On Tue, Aug 21, 2012 at 8:45 AM, Randy Dunlap <rdunlap@xenotime.net> wrote: >> On 08/19/2012 10:22 PM, Dave Airlie wrote: >> >>> On Mon, Aug 20, 2012 at 3:13 PM, Randy Dunlap <rdunlap@xenotime.net> wrote: >>>> On 08/17/12 15:55, Dave Airlie wrote: >>>> >>>>> On Sat, Aug 18, 2012 at 8:54 AM, Dave Airlie <airlied@gmail.com> wrote: >>>>>> On Sat, Aug 18, 2012 at 8:28 AM, Randy Dunlap <rdunlap@xenotime.net> wrote: >>>>>>> On 08/17/2012 03:25 PM, Justin M. Forbes wrote: >>>>>>> >>>>>>>> for <driver>, we have verified cases on inteldrmfb, radeondrmfb, and >>>>>>>> cirrusdrmfb. >>>>>>>> >>>>>>>> This is the last message displayed before the system hangs. This seems >>>>>>>> to be hitting a large number of users in Fedora, though certainly not >>>>>>>> everyone. This started happening with the 3.5 updates, and is still an >>>>>>>> issue. It appears to be a race condition, because various things have >>>>>>>> allowed boot to continue for some users, though there is no clear work >>>>>>>> around. Has anyone else run across this? Any ideas. For more >>>>>>>> background we have the following bugs: >>>>>>>> >>>>>>>> inteldrmfb: >>>>>>>> https://bugzilla.redhat.com/show_bug.cgi?id=843826 >>>>>>>> >>>>>>>> radeondrmfb: >>>>>>>> https://bugzilla.redhat.com/show_bug.cgi?id=845745 >>>>>>>> >>>>>>>> cirrusdrmfb <kvm>: >>>>>>>> https://bugzilla.redhat.com/show_bug.cgi?id=843860 >>>>>>>> >>>>>>>> It should be noted that the conflicting fb hw usage message is not new, >>>>>>>> it has been around for a while, but this is the last message seen before >>>>>>>> the hang. >>>>>>> >>>>>>> >>>>>>> Hi, (adding dri-devel mailing list) >>>>>>> >>>>>>> >>>>>>> I started seeing this problem on 3.5-rc6. >>>>>>> >>>>>>> AFAICT, the system is not actually hung, it's just that no output >>>>>>> is showing up on the real (physical) output device (display) -- it's >>>>>>> going somewhere else (or to the bit bucket). >>>>>>> >>>>>> >>>>>> Can we bisect this at all? >>>> >>>> I guess I'll have to try again. My first attempt did not >>>> prove anything, I think because the conflict does not happen >>>> 100% of the time (i.e., it feels like a timing problem). >>>> >>>>>> I worry the intel one will bisect to where we moved the conflict >>>>>> resolution earlier, but I'd like to see if applying that patch earlier >>>>>> causes the issue, since radeon has it. >>>> >>>> Do you know of a specific commit that I could revert and test? >>> >>> 9f846a16d213523fbe6daea17e20df6b8ac5a1e5 >>> >>> might work, but it just changes the timing mostly. >>> >>> also testing 3.4 with that on top would be good. >> >> >> That commit doesn't apply cleanly to 3.4, but reverting >> it on 3.5-rc6 (where I first saw the problem) allows me to boot >> 3.5-rc6 multiple times without a problem. >> >> Maybe Justin can get more stable testing done also.. > > Randy do you have a vga= on your kernel command line? Ah, yes: "vga=ask" -- ~Randy ^ permalink raw reply [flat|nested] 9+ messages in thread
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[not found] <1345242330.3841.8.camel@fedora64.linuxtx.org>
2012-08-17 22:28 ` 3.5.x boot hang after conflicting fb hw usage <driver> vs VESA VGA - removing generic driver Randy Dunlap
2012-08-17 22:54 ` Dave Airlie
2012-08-17 22:55 ` Dave Airlie
2012-08-17 23:05 ` Randy Dunlap
2012-08-20 5:13 ` Randy Dunlap
2012-08-20 5:22 ` Dave Airlie
2012-08-20 22:45 ` Randy Dunlap
2012-08-21 0:23 ` Dave Airlie
2012-08-21 0:58 ` Randy Dunlap
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